Electrical Potential : lead CC6 ,per V6 AND V6R placement 2009-03-03 13:43:46 Stephen J. Granite 2009-03-04 10:11:27 AB3 (Auxillary bipolar lead #3) Stephen J. Granite Stephen J. Granite CM6, per V6 Placement 2009-03-04 10:11:27 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite The electrode at which electrons leave the nonmetallic part of a circuit and oxidation occurs. http://en.wikipedia.org/wiki/Electrode 2009-03-03 13:43:46 2009-03-03 13:43:46 HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) The third deflection in R wave with an opposite sign from the second deflection in the R wave. Stephen J. Granite CC7,per V7 and V8R placement Stephen J. Granite 2009-03-04 10:11:27 2009-03-03 13:43:46 Stephen J. Granite Start time of U wave Electrical potential :lead I 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Electrical potential ; lead III The entire beat from the beginning of the Q wave to the end of the U wave. Stephen J. Granite HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite Incomplete left bundle branch block. (Do not code in the presence of any codable Q- or QS-wave.) QRS duration >= 0.10 sec and < 0.12 in the majority of beats of each of leads I, aVL, and V5 or V6. 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf electrical potential : lead C 2009-03-03 13:43:46 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 QS pattern in each of leads III and aVF. (Do not code in the presence of 7-1-1.) Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead CC5 , per V5 and V5R placement Stephen J. Granite The smallest possible quantity. Stephen J. Granite NCI Thesaurus 2009-03-03 13:43:46 Stephen J. Granite AB2 (Auxillary bipolar lead #2) 2009-03-04 10:11:27 http://www.epi.umn.edu/ecg/mncode.pdf Ventricular fibrillation or ventricular asystole. 2009-04-27 16:03:38 Stephen J. Granite 2009-03-03 13:43:46 http://medical-dictionary.thefreedictionary.com/Q+wave In the QRS complex, the initial downward (negative) deflection, related to the initial phase of depolarization of the ventricular myocardium, the depolarization of the interventricular septum. Stephen J. Granite CC6, per V6 and V6R placement 2009-03-04 10:11:27 Stephen J. Granite 2009-03-03 13:43:46 End of S wave Stephen J. Granite Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf WPW Pattern, intermittent. WPW pattern in " 50% of beats in appropriate leads. 2009-04-27 16:03:38 2009-03-03 13:43:46 Electrical potential: lead Chest lead Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 electical potential Lead F Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite NCI Thesaurus The minimum duration (time) of the PR interval, obtained from a set of measurements of the PR interval. The PR interval is defined as the time from the beginning of the P wave (representing the onset of atrial depolarization) to the beginning of the R wave (representing the onset of ventricular depolarization). In some cases, a Q wave will precede the R wave, in which case the PR interval is measured from the beginning of the P wave to the beginning of the Q wave. http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite R-R' pattern in either of leads V1, V2 with R' amplitude >= R. 2009-04-27 16:03:38 Stephen J. Granite electrical potential ; lead V7R 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead CC4, per V4 and V4R Placement 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Persistent ventricular (idioventricular) rhythm. 2009-03-04 10:11:27 EASI AI Stephen J. Granite 2009-03-03 13:43:46 The third deflection in S wave with an opposite sign from the RR wave. HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Electrical potential ,ST 20 point PMID(3171455,220,F9:0:2) Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : Negative : right infraclavicular fossa Stephen J. Granite 2009-03-03 13:43:46 Electrical Potential , S2 The minimum duration (time) of the JT interval, obtained from a set of measurements of the JT interval. The JT interval is defined as the time from the J point (end of ventricular depolarization, the point at which the QRS meets the ST segment) to the end of the T wave (representing the end of ventricular repolarization). NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 CM4, Per V4 placement Stephen J. Granite 2009-03-04 10:11:27 2009-04-27 16:03:38 Wolff-Parkinson-White Pattern (WPW), persistent. Sinus P-wave. P-R interval < 0.12 sec, plus QRS duration >= 0.12 sec, plus R peak duration >= 0.06 sec, coexisting in the same beat and present in the majority of beats in any of leads I, II, aVL, V4, V5, V6. (6-4-1 suppresses 1-2-3, 1-2-7, 1-2-8, 1-3-2, 1-3-6, all 3, 4, 5, 9-2, 9-4, 9-5 codes.) http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite electrical potential : lead VL, nonaugmented voltage, vector of RA Stephen J. Granite Q duration >= 0.03 sec and < 0.04 sec in lead III, plus a Q-wave >= 1.0 mm amplitude in the majority of beats in lead aVF. 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf (Do not code in the presence of code 6-4-1, 7-1-1, 7-2-1 or 7-4.). http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Artificial pacemaker. Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Combination of 7-7 and 7-2. 2009-04-27 16:03:38 Stephen J. Granite electrical potential : ST 20 point Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite Electical potential lead E Stephen J. Granite 2009-03-03 13:43:46 electrical potential : lead A 2009-03-03 13:43:46 Stephen J. Granite NCI Thesaurus The average (mean) amplitude (usually in mm) of the S wave, obtained from a set of measurements of the S wave, in a particular lead or set of leads. 2009-04-27 16:03:38 Stephen J. Granite Intermittent ventricular tachycardia. Three or more consecutive ventricular premature beats occurring at a rate >= 100. This includes more persistent ventricular tachycardia. http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-03 13:43:46 Electrical potential : Lead CC3, per V3 and V3R placement Stephen J. Granite Electrical potential ,ST 20 point Stephen J. Granite 2009-03-03 13:43:46 2009-03-04 10:11:27 A dipole with the negative (white) electrode on the right arm and the positive (black) electrode on the left arm. http://en.wikipedia.org/wiki/Electrocardiogram Stephen J. Granite Stephen J. Granite ST segment 2009-03-03 13:43:46 2009-03-04 10:11:27 Stephen J. Granite FMA Ref_db (1,342,2:11) 2009-03-03 13:43:46 Stephen J. Granite Time period QT corrected 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Electrical potential : Lead -aVR 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite Electrical potential S3 2009-03-03 13:43:46 Start time of QS complex Stephen J. Granite The second deflection in R wave with an opposite sign from the R wave. HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) 2009-03-03 13:43:46 Stephen J. Granite Q duration >= 0.03 sec and < 0.04 sec in lead aVF. http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Electrical potential , ST 20 points Stephen J. Granite 2009-03-03 13:43:46 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Left anterior hemiblock (LAH). QRS duration < 0.12 sec in the majority of beats in leads I, II, III, aVL, aVF, plus Q-wave amplitude >= 0.25 mm and < 0.03 sec duration in lead I, plus left axis deviation of -450 or more negative. (In presence of 7-2, code 7-8 if axis is < -450 and the Q-wave in lead I meets the above criteria.) Stephen J. Granite Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf FMA Stephen J. Granite 2009-03-04 10:11:27 end time of R wave Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 PMID(3171455,220,F2:0:2) : Corrected square root formula Stephen J. Granite Wandering atrial pacemaker. 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Complete left bundle branch block (LBBB). (Do not code in presence of 6-1, 6-4-1, 6-8, 8-2-1 or 8-2-2.) QRS duration >= 0.12 sec in a majority of beats in any of leads I, II, III, aVL, aVF, plus R peak duration >= 0.06 sec in a majority of beats (of the same QRS pattern) in any of leads I, II, aVL, V5, V6. (7-1-1 suppresses 1-2-3, 1-2-7, 1-2-8, 1-3-2, 1-3-6, all 2, 3, 4, 5, 9-2, 9-4, 9-5 codes. If any other codable Q-wave coexists with the LBBB pattern, code the Q and diminish the 7-1-1 code to a 7-4 code.). Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Intermittent atrial flutter (code of 3 or more clear-cut, consecutive sinus beats are present in any lead). 2009-03-03 13:43:46 End time of U wave Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Q/R amplitude ratio >= 1/5 and < 1/3, plus Q duration >= 0.02 sec and < 0.03 sec Stephen J. Granite 2009-04-27 16:03:38 A downward deflection of the QRS complex following the R wave in the normal electrocardiogram and representing late depolarization of the ventricles. Stephen J. Granite 2009-03-03 13:43:46 http://medical-dictionary.thefreedictionary.com/S+wave Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead CC2, per V2 AND V2R Placement http://www.epi.umn.edu/ecg/mncode.pdf Ventricular parasystole (should not be coded in presence of 8-3-1). Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Right (optional code when 2-2 is not present). QRS axis from +90 degrees through +119 degrees in leads I, II, III. (The algebraic sum of major positive and major negative QRS waves must be zero or negative in I and positive in II and III.) Stephen J. Granite 2009-03-04 10:11:27 CM2 , per V2 placement Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead V8R Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Quotient of quantities of two amplitudes within an ECG Lead. 2009-03-03 13:43:46 Presence of both atrial and/or junctional premature beats and ventricular premature beats (so that individual frequencies are < 10% but combined premature beats are ! 10% of complexes). 2009-04-27 16:03:38 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf http://www.epi.umn.edu/ecg/mncode.pdf QS pattern in lead V1 and V2. (Do not code in the presence of 3-1 or 7-1-1.) 2009-04-27 16:03:38 Stephen J. Granite Electrical potential : lead AB2(Auxillary bipolar Lead #2) 2009-03-03 13:43:46 Stephen J. Granite PMID(8256750 ,19B, [16,17]:0:0:Table II) Stephen J. Granite 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 Intermittent atrial fibrillation (code if 3 or more clear-cut, consecutive sinus beats are present in any lead). eLECTICAL POTENTIAL : LEAD cc1, per V1 and V1R placement Stephen J. Granite 2009-03-03 13:43:46 Chest lead 2009-03-04 10:11:27 Stephen J. Granite electrical potential : lead D (nebb-dorsal) Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : Lead AB1 (Auxillary bipolar lead#1) 2009-03-03 13:43:46 2009-04-27 16:03:38 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Q duration >= 0.03 sec and < 0.04 sec, plus R amplitude >= 3 mm in lead aVL. 2009-03-03 13:43:46 Stephen J. Granite Electrical Potential ; Lead V6R 2009-04-27 16:03:38 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Extreme axis deviation (usually S1, S2, S3 pattern). QRS axis from -90 degrees through -149 degrees in leads I, II, and III (The algebraic sum of major positive and major negative QRS waves must be negative in each of leads I, II, and III.) 2009-03-03 13:43:46 Stephen J. Granite Measurements derived from waves within an electrocardiogram. 2009-04-27 16:03:38 T amplitude positive and T/R amplitude ratio < 1/20; R wave amplitude must be >= 10.0 mm. Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-03 13:43:46 Stephen J. Granite electrical potential : lead aVF ,augmented voltage ,foot end time of P wave Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical Potential ,S1 2009-03-03 13:43:46 CM3, Per V3 placement Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite 2009-03-03 13:43:46 D (Nehb-Dorsal) Stephen J. Granite 2009-03-04 10:11:27 PMID(8256750 ,19B, [1,4]:0:0:Table II) 2009-03-03 13:43:46 Stephen J. Granite electrical potential ; lead I Stephen J. Granite 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 STJ depression >= 1.0 mm but < 2.0 mm, and ST segment horizontal or downward sloping Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-04 10:11:27 Canine,sixth left intercostals space near the edge of the sternum at the most curved part of the costal cartilage 2009-03-03 13:43:46 http://www.gehealthcare.com/usen/cardiology/diagnostic_ecg/algorithms/index.html Stephen J. Granite Stephen J. Granite Atrial flutter (persistent). 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf P wave is the electrical signature of the current that causes atrial contraction - the portion of the EKG tracing that represents depolarization of the atrial myocardium. Initial portion of the P wave is largely a reflection of right atrial depolarization and the terminal portion reflects depolarization of the left atrium. NCI Thesaurus Stephen J. Granite 2009-02-27 12:49:51 PMID(17229304 ,78,3:2 :5) Stephen J. Granite 2009-03-03 13:43:46 Start time of R wave Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Defibrillator lead :anterior-lateral 2009-03-04 10:11:27 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead Chest Chest-manubrium 2009-03-04 10:11:27 Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite negative:low right scapula STJ depression >= 2.0 mm and ST segment horizontal or downward sloping Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-03 13:43:46 electrical potential lead left arm Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf T amplitude zero (flat), or negative, or diphasic (negative-positive type only) with less than 1.0 mm negative phase Stephen J. Granite Indeterminate axis QRS axis approximately 90 degrees from the frontal plane. (The algebraic sum of major positive and major negative QRS waves is zero in each of leads I, II and III, or the information from these three leads is incongruous.) Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Amplitude , T, Maximum 2009-03-03 13:43:46 Stephen J. Granite 2009-04-27 16:03:38 Q/R amplitude ratio >= 1/3, plus Q duration >= 0.02 sec and < 0.03 sec http://www.epi.umn.edu/ecg/mncode.pdf Intermittent left bundle branch block. Same as 7-1-1 but with presence of normally conducted QRS complexes of different shape than the LBBB pattern. http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Presence of 8-1-2 and 8-1-4. Stephen J. Granite 2009-03-03 13:43:46 The average (mean) duration (time) of the QRS interval, obtained from a set of measurements of the QRS interval. The QRS interval is defined as the time from the beginning of the QRS complex to the end of the QRS complex, representing the time it takes for the ventricles to depolarize. NCI Thesaurus An electrocardiogram (ECG) lead placement whereby 4 chest electrodes and 1 reference electrode are used to allow for continuous monitoring at the clinical level. This placement creates a 12 lead ECG that allows the acquisition of simultaneous events in the frontal, horizontral and sagittal heart planes with the linear transformation of vectors. This system provides a three-dimensional portrayal of the heart and uses mathematical and fixed coefficients for each lead. 2009-03-03 15:05:38 Stephen J. Granite NCI Thesaurus 2009-04-27 16:03:38 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Electrical potential : lead VF, nonaugmented voltage ,vector of RA 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite electrical potential ; lead H AB4 (Auxillary bipolar lead #4) 2009-03-04 10:11:27 Stephen J. Granite Atrial fibrillation (persistent). 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Stephen J. Granite FMA 2009-03-04 10:11:27 2009-03-03 13:43:46 The continuum of experience in which events pass from the future through the present to the past. Stephen J. Granite NCI Thesaurus 2009-03-03 13:43:46 Stephen J. Granite An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but the Mason Likar lead positions have been modified so that V1 to V6 on the chest are part of a single electrode pad. In addition, lead CM5 is substituted for lead aVR. 2009-03-03 15:05:39 Stephen J. Granite NCI Thesaurus Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Supraventricular tachycardia intermittent. Three consecutive atrial or junctional premature beats occurring at a rate >= 100. Stephen J. Granite A dipole with the negative (black) electrode on the left arm and the positive (red) electrode on the left leg. http://en.wikipedia.org/wiki/Electrocardiogram 2009-03-04 10:11:27 Electrical potential : lead modified chest lead (left arm indifferent) Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 CM1,Per V1 placement 2009-03-04 10:11:27 Stephen J. Granite T amplitude negative or diphasic (positive-negative or negative-positive type) with negative phase at least 1.0 mm but not as deep as 5.0 mm. Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 2009-03-03 13:43:46 Time period QT corrected using fridericias correction formula Stephen J. Granite 2009-03-04 10:11:27 VL, nonaugmented voltage, vector of LA Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf T amplitude negative 5.0 mm or more Stephen J. Granite 2009-04-27 16:03:38 Stephen J. Granite A dipole with the positive electrode (white) on the right arm and the negative electrode derived from two other electrodes. The negative electrode is a combination of the left arm (black) electrode and the left leg (red) electrode, which "augments" the signal strength of the positive electrode on the right arm. http://en.wikipedia.org/wiki/Electrocardiogram 2009-03-04 10:11:27 2009-03-03 13:43:46 Stephen J. Granite Electical potential : lead V3 2009-03-03 13:43:46 NCI Thesaurus Stephen J. Granite The most extreme possible amount or value; the highest point. Stephen J. Granite Electrical Potential :Lead V5R 2009-03-03 13:43:46 NCI Thesaurus The average (mean) amplitude (usually in mm) of the R wave, obtained from a set of measurements of the R wave, in a particular lead or set of leads. Stephen J. Granite 2009-03-03 13:43:46 electrical potential : lead A (nebb-anterior) 2009-03-03 13:43:46 Stephen J. Granite Right: R amplitude ! 5.0 mm and R amplitude ! S amplitude in the majority of beats in lead V1, when S amplitude is > R amplitude somewhere to the left on the chest of V1 (codes 7-3 and 3-2, if criteria for both are present). 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead V9R Electrical potential : Lead VR, nonaugmented voltage, vector of RA Stephen J. Granite 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 QRS transition zone at V3 or to the right of V3 on the chest. (Do not code in the presence of 6-4-1, 7-1-1, 7-2-1 or 7-4.) 2009-02-27 12:49:47 An initial slurring (delta wave) of the QRS complex due to the presence of an accessory pathway. This characteristic EKG pattern is typically seen in Wolff-Parkinson-White syndrome. NCI Thesaurus Stephen J. Granite NCI Thesaurus 2009-03-03 13:43:46 Stephen J. Granite The average (mean) Stephen J. Granite Low QRS amplitude. QRS peak-to-peak amplitude < 5 mm in all beats in each of leads I, II, III, or < 10 mm in all beats in each of leads V1, V2, V3, V4, V5, V6. (Check calibration before coding.) http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Derived lead V5 2009-03-04 10:11:27 http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Stephen J. Granite 2009-03-04 10:11:27 FMA http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Q duration >= 0.03 sec and < 0.04 sec Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite http://en.wikipedia.org/wiki/Electrical_potential 2009-03-03 13:43:46 Stephen J. Granite The potential energy per unit of charge that is associated with a static (time-invariant) electric field. It is a scalar quantity, typically measured in volts. The difference in electrical potential between two points is known as voltage. Stephen J. Granite Electrical potential : lead V2 2009-03-03 13:43:46 Q duration ! 0.04 sec and < 0.05 sec in lead III, plus a Q-wave ! 1.0 mm amplitude in the majority of beats in aVF. http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 ML, Modified limb lead, ~ Lead II Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite electrical potential : lead aVR ,augmented voltage, left 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Left (optional code when 3-1 is not present): R amplitude > 15.0 mm but " 20.0 mm in lead I, or R amplitude in V5 or V6, plus S amplitude in V1 > 35.0 mm. (Measured only on second to last complete normal beat.) 2009-04-27 16:03:38 A1 (auxillary unipolar lead #1) 2009-03-04 10:11:27 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite ST segment elevation >= 1.0 mm 2009-04-27 16:03:38 FMA Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf QRS transition zone at V4 or to the left of V4 on the chest. (Do not code in the presence of 6-4-1, 7-1-1, 7-2-1 or 7-4.) 2009-04-27 16:03:38 QS pattern in lead. Do not code in the presence of 7-1-1. http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 Stephen J. Granite HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) The second deflection in P wave with an opposite sign from the P wave. 2009-03-03 13:43:46 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Q duration >= 0.04 sec and < 0.05 sec in lead aVF. 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Partial (second degree) A-V block in any lead (2:1 or 3:1 block). Electrical potential ; lead V1 2009-03-03 13:43:46 Stephen J. Granite Derived Lead II Stephen J. Granite 2009-03-04 10:11:27 NCI Thesaurus 2009-03-03 13:43:46 The average (mean) duration (time) of the JT interval, obtained from a set of measurements of the JT interval. The JT interval is defined as the time from the J point (end of ventricular depolarization, the point at which the QRS meets the ST segment) to the end of the T wave (representing the end of ventricular repolarization). Stephen J. Granite Stephen J. Granite A fully specified region of interest (ROI),delineates a ROI in which only those dimenions participate that are specified by boundary criteria, whereas all other dimensions are excluded. 2009-03-03 13:31:21 HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) Stephen J. Granite A2 (Auxillary unipolar lead #2) 2009-03-04 10:11:27 2009-03-03 13:43:46 Electrical potential : lead AB3 (Auxillary bipolar lead #3) Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead M 2009-03-03 13:43:46 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Presence of frequent ventricular premature beats (10% or more of record complexes). 2009-03-04 10:11:27 Derived lead aVL Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Wenckebach's Phenomenon (P-R interval increasing from beat to beat until QRS and T dropped). NCI Thesaurus Position or arrangement, as of the teeth; the state of being placed or arranged, as the assignment of a person to a appropriate clinical study. 2009-03-03 15:05:33 Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite 2009-04-27 16:03:38 Stephen J. Granite Q amplitude >= 5.0 mm in leads III or aVF. http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Limb leads on the back (shoulder and on the hips). NCI Thesaurus 2009-03-03 15:05:36 2009-04-27 16:03:38 Left: R amplitude > 26 mm in either V5 or V6, or R amplitude > 20.0 mm in any of leads I, II, III, aVF, or R amplitude > 12.0 mm in lead aVL. (All criteria measured only on second to last complete normal beat.) http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite A3 (Auxillary unipolar lead #3) Stephen J. Granite 2009-03-04 10:11:27 Derived lead V6 2009-03-03 13:43:46 Electrical potential : lead chest-manubrium Stephen J. Granite 2009-03-03 13:43:46 Amplitude,P , Maximum Stephen J. Granite 2009-03-03 13:43:46 Electrical Potential : lead AB4 (auxillary bipolar lead #4) Stephen J. Granite 2009-03-03 13:43:46 Start time of QT segment Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite Derived Lead III 2009-03-03 13:43:46 Stephen J. Granite The Minnesota Code is a classification system for the electrocardiogram that utilizes a defined set of measurement rules to assign specific numerical codes according to severity of ECG findings. The Minnesota Code, developed in the late 1950s by Dr. Henry Blackburn in response to the need for reporting ECG findings in uniform, clearly defined, and objective terms, is the most widely used ECG classification system in the world for clinical trials and epidemiologic studies. It incorporates ECG classification criteria that have been validated, widely employed, and accepted by clinicians. The Minnesota Code provides an objective ECG classification system free of impressionist physician bias, by which different studies can have a common standard to compare or pool ECG findings. It now includes objective procedures for defining significant pattern changes from serial ECG comparison, such as evidence of new MI, new ischemia, progression or regression of LVH and new conduction defect. Stephen J. Granite http://www.epi.umn.edu/ecg/ 2009-04-27 16:03:38 Electrical potential : lead EASI ES Stephen J. Granite 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 Presence of frequent atrial or junctional premature beats (10% or more of recorded complexes).. http://medical-dictionary.thefreedictionary.com/T+wave 2009-03-03 13:43:46 the deflection of the normal electrocardiogram following the QRS complex; it represents repolarization or recovery of the ventricles. Stephen J. Granite 2009-03-03 13:43:46 Measurements derived from leads within an electrocardiogram. Stephen J. Granite Stephen J. Granite Time period ,QT using bazetts correction 2009-03-03 13:43:46 NCI Thesaurus The value which has an equal number of values greater and less than it. Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Canin,fifth right intercostals space near the edge of the sternum at the most curved part of the costal cartilage 2009-03-04 10:11:27 QS pattern in all of leads V1, V2, and V3. (Do not code in the presence of 7-1-1). Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-03 13:43:46 The period of time or the distance separating two instances, events, or occurrences. NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 end of time QS complex Stephen J. Granite Derived Lead V1 Stephen J. Granite 2009-03-04 10:11:27 2009-03-04 10:11:27 Stephen J. Granite J (Nehb-inferior) Stephen J. Granite T-wave amplitude > 12 mm in any of leads I, II, III, aVL, aVF, V1, V2, V3, V4, V5, V6. (Do not code in the presence of 6-4-1, 7-1-1, 7-2-1 or 7-4.) 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-04 10:11:27 Stephen J. Granite Right Leg Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 PMID(8256750 ,19B, [5,15]:0:0:Table II) The maximum duration (time) between successive peaks of R waves in a particular set of RR intervals. 2009-03-03 13:43:46 NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead left leg Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : Lead ML, MODIFIED LIMB LEAD ,-LEAD II http://en.wikipedia.org/wiki/Electrocardiogram 2009-03-04 10:11:27 Leads I, II and III are the so-called limb leads because at one time, the subjects of electrocardiography had to literally place their arms and legs in buckets of salt water in order to obtain signals for Einthoven's string galvanometer. They form the basis of what is known as Einthoven's triangle. Eventually, electrodes were invented that could be placed directly on the patient's skin. Even though the buckets of salt water are no longer necessary, the electrodes are still placed on the patient's arms and legs to approximate the signals obtained with the buckets of salt water. They remain the first three leads of the modern 12 lead ECG. Stephen J. Granite Initial R amplitude decreasing to 2 mm or less in every beat (and absence of codes 3-2, 7-1-1, 7-2-1, or 7-3). All beats must have an initial R > 2 mm. Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite 2009-03-03 13:43:46 Amplitude , Q Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite The average (mean) duration (time) of the RR interval, obtained from a set of measurements of the RR interval. The RR interval is defined as the time between sucessive peaks of the R wave and can be used to measure the ventricular rate. NCI Thesaurus http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Criteria for 3-1 and 3-2 both present. 2009-04-27 16:03:38 2009-03-04 10:11:27 Stephen J. Granite Derived Lead V3 http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 P-wave amplitude >= 2.5 mm in any of leads II, III, aVF, in a majority of beats. Stephen J. Granite 2009-03-04 10:11:27 A dipole with the negative (white) electrode on the right arm and the positive (red) electrode on the left leg. http://en.wikipedia.org/wiki/Electrocardiogram Stephen J. Granite Electrical potential : lead II Stephen J. Granite 2009-03-03 13:43:46 The electrode at which electrons enter the nonmetallic part of a circuit and reduction occurs. 2009-03-03 13:43:46 Stephen J. Granite http://en.wikipedia.org/wiki/Electrode The magnitude of an oscillation. NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf (Do not code in the presence of WPW code 6-4-1.) To qualify as a Q- or QS-wave, the deflection should be at least 0.1 mV (1 mm in amplitude). Stephen J. Granite 2009-04-27 16:03:38 2009-03-03 13:43:46 Stephen J. Granite The maximum duration (time) of the PR interval, obtained from a set of measurements of the PR interval. The PR interval is defined as the time from the beginning of the P wave (representing the onset of atrial depolarization) to the beginning of the R wave (representing the onset of ventricular depolarization). In some cases, a Q wave will precede the R wave, in which case the PR interval is measured from the beginning of the P wave to the beginning of the Q wave. NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 Canine, sixth left intercostals space at the costochondral junction 2009-03-04 10:11:27 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite electrical potential : lead aVL ,augmented voltage, left 2009-03-04 10:11:27 FMA Stephen J. Granite Stephen J. Granite Electrical potential : lead EASI AI 2009-03-03 13:43:46 Electrical potential : lead defibrillator lead: anterior-lateral Stephen J. Granite 2009-03-03 13:43:46 HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) 2009-03-03 13:43:46 The second deflection in S wave with an opposite sign from the R wave. Stephen J. Granite Stephen J. Granite Amplitude, R 2009-03-03 13:43:46 2009-03-03 13:43:46 Electrical potential : Lead VY Stephen J. Granite End of time QT segment Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf P-R (P-Q) interval ! 0.22 sec in the majority of beats in any of leads I, II, III, aVL, aVF. 2009-04-27 16:03:38 2009-03-04 10:11:27 Stephen J. Granite FMA Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead MCL4 ,per V4 placement Electrical Potential : lead CM1 per V1 placement Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite A partially specified bounded region of interest (ROI) specifies a ROI in which at least all values in the dimensions specified by boundary criteria participate. 2009-03-03 13:31:21 HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) An electrocardiogram (ECG) lead placement that allows monitoring and recording of cardiac electrical activity. A V1-type lead is used whose positive electrode is localized in the 4th intercostal space, 2.5cm from the sternum. Its negative electrode is placed below the left clavicle. An addition of lead V5 and aVF can be made to facilitate interpretation. 2009-03-03 15:05:38 NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Start time of Q wave Stephen J. Granite Electrical potential , R2 2009-03-03 13:43:46 Stephen J. Granite 2009-04-27 16:03:38 (Do not code in the presence of codes 6-4-1, 7-1-1, 7-2-1 or 7-4. When 4-1, 4-2, or 4-3 is coded, then a 5-code must also be assigned except in lead V1.) http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-04 10:11:27 http://en.wikipedia.org/wiki/Electrocardiogram A dipole with the negative electrode at Wilson's central terminal and the positive electrode on the fifth intercostal space in the midclavicular line (even if the apex beat is displaced). PMID(3171455,220,F4:0:2) 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite electrical potential ; lead VZ 2009-03-03 13:43:46 V4R Stephen J. Granite 2009-03-04 10:11:27 2009-03-03 13:43:46 An electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte or a vacuum). The word was coined by the scientist Michael Faraday from the Greek words elektron (meaning amber, from which the word electricity is derived) and hodos, a way. Stephen J. Granite http://en.wikipedia.org/wiki/Electrode 2009-03-03 13:43:46 Time period QT Segment Stephen J. Granite http://en.wikipedia.org/wiki/Electrocardiogram 2009-03-04 10:11:27 The precordial leads are placed directly on the chest. Because of their close proximity to the heart, they do not require augmentation. Wilson's central terminal is used for the negative electrode, and these leads are considered to be unipolar. Stephen J. Granite Electrical potential : lead right leg 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 PMID(15842424,135,4:0:0) 2009-03-03 13:43:46 Electrical potential ; lead V3R Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Start time QRS Complex NCI Thesaurus Stephen J. Granite A QS wave is an abnormal Q wave, and is an electrocardiographic finding. 'QS" wave or abnormal 'Q' wave in the right precordial leads, epicardial leads of the right ventricle and unipolar aVR lead with a high and relatively broad 'R' wave simulating an incomplete left bundle branch block without 'Q' waves in leads 1, aVL and left precordial leads - reciprocal and antagonistic aspects 2009-02-27 12:49:47 A dipole with the negative electrode at Wilson's central terminal and the positive electrode directly between the positive electrodes for Lead V2 and V4. http://en.wikipedia.org/wiki/Electrocardiogram Stephen J. Granite 2009-03-04 10:11:27 2009-03-03 13:43:46 electrical potential : lead MCL3 ,per V3 placement Stephen J. Granite An electrocardiogram (ECG) lead placement that is a type of uncorrected vectorcardiograph. This lead system is based on a rectangular body axis. It uses an extra number of electrodes to make it three-dimensional. 2009-03-03 15:05:36 NCI Thesaurus Stephen J. Granite An electrocardiogram (ECG) lead placement whereby the X+ lead is placed at the right mid-axillary line at the 4th intercostal space, X- at the left mid-axillary line at the 4th intercostal space, Y+ at the proximal left leg, Y- at the superior aspect of the manubrium, Z+ at the direct posterior to Z- and Z- at the 4th intercostal space at the left sternal margin. NCI Thesaurus 2009-03-03 15:05:38 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Short P-R interval. P-R interval < 0.12 sec in all beats of any two of leads I, II, III, aVL, aVF. Precordial lead Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite 2009-03-03 13:43:46 The largest possible quantity or degree. 2009-03-03 13:43:46 NCI Thesaurus Stephen J. Granite Stephen J. Granite 2009-03-04 10:11:27 VR,nonaugmented voltage, vector of RA Stephen J. Granite 2009-03-03 13:43:46 Electrical potential ,R1 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 The duration (time) of the QRS interval, obtained from a set of measurements of the QRS interval. The QRS interval is defined as the time from the beginning of the QRS complex to the end of the QRS complex, representing the time it takes for the ventricles to depolarize. The average (mean) duration (time) from the onset of ventricular repolarization to the completion of ventricular repolarization (length of the T wave), obtained from a set of measurements of the time from beginning to end of ventricular repolarization. Stephen J. Granite 2009-03-03 13:43:46 NCI Thesaurus electrical potential : lead V8 2009-03-03 13:43:46 Stephen J. Granite http://en.wikipedia.org/wiki/ECG 2009-03-03 13:43:46 A typical ECG tracing of a normal heartbeat (or cardiac cycle) consists of a P wave, a QRS complex and a T wave. A PQRST wave contains the entire beat from the beginning of the P wave to the end of the T wave, excluding the U wave. Stephen J. Granite Stephen J. Granite An electrocardiographic cable with connections within the electronics of the machine designated for an electrode placed at a particular point on the body surface. http://www.mondofacto.com/facts/dictionary?ECG+lead 2009-03-04 10:11:27 Chest Lead (symmetric placement) Stephen J. Granite 2009-03-04 10:11:27 http://en.wikipedia.org/wiki/Electrocardiogram 2009-03-04 10:11:27 Stephen J. Granite A dipole with the positive (black) electrode on the left arm and the negative electrode derived from two other electrodes. The negative electrode is a combination of the right arm (white) electrode and the left leg (red) electrode, which "augments" the signal strength of the positive electrode on the left arm. Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead MCL6 ,per V6 placement 2009-03-03 13:43:46 Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite http://en.wikipedia.org/wiki/Electrocardiogram A dipole with the negative electrode at Wilson's central terminal and the positive electrode on the fourth intercostal space to the left of the sternum. 2009-03-04 10:11:27 Stephen J. Granite FMA http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 Intermittent aberrant atrioventricular conduction. P-R > 0.12 sec (except in presence of 6-5 or heart rate greater than 100); wide QRS complex > 0.12 sec; normal P-wave when most beats are sinus rhythm. (Do not code in the presence of 6-4-2.) 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead V9 Stephen J. Granite The average (mean) duration (time) from the onset of atrial depolarization to the completion of atrial depolarization (length of the P wave), obtained from a set of measurements of the time from beginning to end of atrial depolarization. 2009-03-03 13:43:46 NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 PMID(3171455,220,F10:0:2) A uniformly advancing disturbance in which the parts moved undergo a double oscillation; any wavelike pattern. 0 http://medical-dictionary.thefreedictionary.com/wave Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead MCL5 per V5 placement 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite time period , Q wave 2009-03-04 10:11:27 http://en.wikipedia.org/wiki/Electrocardiogram Stephen J. Granite A dipole with the negative electrode at Wilson's central terminal and the positive electrode on the fourth intercostal space to the right of the sternum. Stephen J. Granite 2009-03-04 10:11:27 V8R 2009-03-03 15:05:39 NCI Thesaurus Stephen J. Granite An electrocardiogram (ECG) lead placement whereby the standard lead placement is modified by having leads V7, V8 and V9. PMID(3171455,220,F6:0:2) Stephen J. Granite 2009-03-03 13:43:46 Electrical potential , R3 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Start time P wave Stephen J. Granite 2009-03-03 13:43:46 End time QRS Segment Stephen J. Granite 2009-03-03 13:43:46 An electrocardiogram (ECG) lead placement whereby 12 leads are recorded, with each lead representing an electrial "view" of the heart. The six leads recorded in the frontal plane are derrived from the placement of 3 electrodes (RA or Right Arm, LA, or Left Arm, and LL or Left Leg). These bipolar frontal leads form the basis of Einthoven's triangle, and are represented by leads I, II, and III. Three other derrived (or augmented) bipolar frontal vectors are also recorded on a standard 12-lead EKG, aVR, aVF, and aVL. 6 unipolar leads, corresponding to V1 - V6 measure the electrical activity in the horizontal plane. The placement for the "V" leads is as follows: V1: right 4th intercostal space,V2: left 4th intercostal space, V3: halfway between V2 and V4, V4: left 5th intercostal space, mid-clavicular line, V5: horizontal to V4, anterior axillary line, V6: horizontal to V5, mid-axillary line. 2009-03-03 15:05:35 Stephen J. Granite NCI Thesaurus 2009-03-04 10:11:27 M Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 PR segment http://www.epi.umn.edu/ecg/mncode.pdf Q duration >= 0.05 sec in lead aVF. Stephen J. Granite 2009-04-27 16:03:38 2009-03-03 13:43:46 Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite MCL, per V4 placement 2009-03-03 13:43:46 NCI Thesaurus The duration (time) connecting the QRS complex and the T wave. The ST segment starts at the J point and ends at the beginning of the T wave. Stephen J. Granite Q duration >= 0.05 sec in lead III, plus a Q-wave amplitude >= 1.0 mm in the majority of beats in lead aVF. Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 NCI Thesaurus 2009-03-03 13:43:46 The area between the x-axis and the curve given by the integrand. It is equal to the definite integral of a function. In the field of pharmacokinetics, the area under the curve (AUC) is the area under the curve in a plot of concentration of a drug in plasma against time. AUC is usually given for the time interval zero to infinity, and other time intervals are indicated. Stephen J. Granite NCI Thesaurus 2009-03-03 13:43:46 Stephen J. Granite The minimum duration (time) of the QT interval, obtained from a set of measurements of the QT interval. The QT interval is defined as the time from the beginning of the QRS complex to the end of the T wave, representing the time it takes for the ventricles to depolarize and subsequently repolarize. In some cases, the Q wave will be absent, in which case the QT interval is measured from the beginning of the R wave to the end of the T wave. EASI upper Sternum lead 2009-03-04 10:11:27 Stephen J. Granite Electrial Potential ; lead V6 2009-03-03 13:43:46 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Mobitz Type II (occurrence of P-wave on time with dropped QRS and T). 2009-04-27 16:03:38 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead V 2009-03-04 10:11:27 Stephen J. Granite V3R 2009-03-03 13:43:46 Electrical potential : lead A2 (Auxillary unipolar lead #2) Stephen J. Granite Electrical potential : lead V7 Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Electrical Potential lead derived I Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite PMID(17229304 ,78,1:2 :5) 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Time period P wave Q duration >= 0.04 sec, plus R amplitude>= 3 mm 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite FMA Stephen J. Granite Anatomical structure, which is a subdivision of a cardinal body part; it may exclude bones; is demarcated from other subdivisions of the same cardinal body part by anatomical surfaces or lines or topographical references; together with other contiguous su 2009-03-04 10:11:27 Stephen J. Granite 2009-03-04 10:11:27 V5R MCL, per V5 placement 2009-03-04 10:11:27 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Time period PQ 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : Lead V4R Stephen J. Granite 2009-03-04 10:11:27 V7 Stephen J. Granite An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but one standard lead position is missing therefore requiring a Mortara source consistency filter. NCI Thesaurus 2009-03-03 15:05:38 2009-03-03 13:43:46 Electrical potential : Lead A1(Auxillary unipolar lead#1) Stephen J. Granite Stephen J. Granite A-V dissociation with atrial pacemaker (with capture). http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite External pacing lead :anterior posterior 2009-03-04 10:11:27 Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite The second deflection in T wave with an opposite sign from the T wave. 2009-03-03 13:43:46 HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) Stephen J. Granite 2009-03-03 13:43:46 Electrical Potential ; lead EASI upper sternum lead Stephen J. Granite Complete (third degree) A-V block (permanent or intermittent) in any lead. Atrial and ventricular complexes independent, and atrial rate faster than ventricular rate, with ventricular rate < 60. http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite 2009-03-03 13:43:46 End time of Q wave Stephen J. Granite http://en.wikipedia.org/wiki/Electrocardiogram A dipole with the negative electrode at Wilson's central terminal and the positive electrode on the midaxillary line horizontally with Leads V4 and V5. 2009-03-04 10:11:27 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Q duration >= 0.04 sec Stephen J. Granite Left Leg 2009-03-04 10:11:27 MCL ,per V2 Placement 2009-03-04 10:11:27 Stephen J. Granite Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite 2009-03-03 13:43:46 Electrical Potential : Lead V4 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead derived aVF Stephen J. Granite PMID(3171455,220,F5:0:2) 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Electrical potential :-(CH5) Stephen J. Granite EASI ES 2009-03-04 10:11:27 Stephen J. Granite V9R 2009-03-04 10:11:27 Stephen J. Granite Stephen J. Granite The period of time during which something continues. 2009-03-03 13:43:46 NCI Thesaurus Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead EASI AS 2009-03-03 13:43:46 Stephen J. Granite electical potential ; Lead VX 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead derived V2 Stephen J. Granite http://en.wikipedia.org/wiki/Electrocardiogram 2009-03-04 10:11:27 A dipole with the negative electrode at Wilson's central terminal and the positive electrode on the anterior axillary line horizontally with Lead V4. http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Q/R amplitude ratio >= 1/3, plus Q duration >= 0.03 sec. 2009-04-27 16:03:38 Unspecified Lead Stephen J. Granite 2009-03-04 10:11:27 2009-03-04 10:11:27 MCL,per V3 placement Stephen J. Granite Start tiem of S wave Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Corrected QT interval Stephen J. Granite The sum of a set of values divided by the number of values in the set. Stephen J. Granite NCI Thesaurus 2009-03-03 13:43:46 2009-03-04 10:11:27 Stephen J. Granite V7R Electrical Potential ; Lead V5 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 PMID(3171455,220,F8:0:2) Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf A-V dissociation with ventricular pacemaker (without capture). Requires: P-P and R-R occur at variable rates with ventricular rate as fast as or faster than the atrial rate, plus variable P-R intervals, plus no capture beats. Stephen J. Granite 2009-04-27 16:03:38 2009-03-03 13:43:46 Stephen J. Granite Measurements derived from specific sources within an electrocardiogram. The spatial property of the way in which an electrocardiogram lead is placed on the body. 2009-03-03 15:05:34 Stephen J. Granite NCI Thesaurus Amplitude , S Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead derived V2 Stephen J. Granite 2009-03-04 10:11:27 H detection of QRS complex Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead derived III 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite Time period PR segment V2R Stephen J. Granite 2009-03-04 10:11:27 http://medical-dictionary.thefreedictionary.com/U+wave Stephen J. Granite a potential undulation of unknown origin immediately following the T wave and often concealed by it; seen in the normal electrocardiogram and accentuated in tachyarrhythmias and electrolyte disturbances. 2009-03-03 13:43:46 Stephen J. Granite 2009-03-04 10:11:27 A Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 15:05:35 An electrocardiogram (ECG) lead placement whereby the display of the 12 standard ECG leads is in an 'orderly' sequence in a single horizontal display of: aVL, I, -aVR, II, aVF, III, V1 to V6. In the Cabrera display the limb lead aVR is inverted (-aVR) to obtain the same positive leftward orientation as the other 5 limbs. NCI Thesaurus Stephen J. Granite NCI Thesaurus An electrocardiographic lead placement schema in which the "V" leads are placed one intercostal space cephalad to the position they would have in the standard lead placement schema. 2009-03-03 15:05:39 2009-03-03 15:05:37 NCI Thesaurus An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but the standard lead positions have been modified for ECG recording during exercise. Exercise stress testing requires moving the limb electrodes to more central positions on the thorax. The electrodes are placed in bony prominences close to the bases of the respective limbs in order to avoid skeletal muscle artifact, provide stability for recording electrodes and to record waveforms similar to the standard limb sites. Stephen J. Granite CC1,per V1 and V1R placement 2009-03-04 10:11:27 Stephen J. Granite The third deflection in P wave with an opposite sign from the P' wave. HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Time period RR Stephen J. Granite Time period PP Stephen J. Granite 2009-03-03 13:43:46 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : lead derived V3 2009-03-03 13:43:46 http://en.wikipedia.org/wiki/ECG The junction between the QRS complex and the ST segment. Stephen J. Granite Leads aVR, aVL, and aVF are augmented limb leads. They are derived from the same three electrodes as leads I, II, and III. However, they view the heart from different angles (or vectors) because the negative electrode for these leads is a modification of Wilson's central terminal, which is derived by adding leads I, II, and III together and plugging them into the negative terminal of the ECG machine. This zeroes out the negative electrode and allows the positive electrode to become the exploring electrode or a unipolar lead. This is possible because Einthoven's Law states that I + (-II) + III = 0. The equation can also be written I + III = II. It is written this way (instead of I - II + III = 0) because Einthoven reversed the polarity of lead II in Einthoven's triangle, possibly because he liked to view upright QRS complexes. Stephen J. Granite http://en.wikipedia.org/wiki/Electrocardiogram 2009-03-04 10:11:27 Start time ,T Wave 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite negative: right infraclavicular fossa 2009-03-04 10:11:27 electrical potential : lead derived aVR 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 15:05:39 NCI Thesaurus Stephen J. Granite An electrocardiogram (ECG) lead placement whereby the rightward oriented V leads progress from V1R, placed instead of the standard V2, to V6R. The V3 lead in the standard placement is replaced by V4R. http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Right. QRS axis from +120 degrees through -150 degrees in leads I, II, III. (The algebraic sum of major positive and major negative QRS waves must be negative in I, and zero or positive in III, and in I must be one-half or more of that in III.) Stephen J. Granite Stephen J. Granite FMA 2009-03-04 10:11:27 2009-04-27 16:03:38 Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf A-V dissociation with atrial pacemaker (without capture). 2009-03-04 10:11:27 Stephen J. Granite Right Arm 2009-03-03 13:43:46 Stephen J. Granite Electrical potential : Lead CM7, per V7 placement 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite QS pattern in all of leads V1-V4 or V1-V5. http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead derived V4 Quotient of Q wave amplitude and R wave amplitude within an ECG Lead. 2009-03-03 13:43:46 Stephen J. Granite electrical potential : lead A3 (Auxillary unipolar lead # 3) Stephen J. Granite 2009-03-03 13:43:46 The maximum duration (time) of the QT interval, obtained from a set of measurements of the QT interval. The QT interval is defined as the time from the beginning of the QRS complex to the end of the T wave, representing the time it takes for the ventricles to depolarize and subsequently repolarize. In some cases, the Q wave will be absent, in which case the QT interval is measured from the beginning of the R wave to the end of the T wave. Stephen J. Granite 2009-03-03 13:43:46 NCI Thesaurus Stephen J. Granite 2009-03-04 10:11:27 CC3, per V3 and V3R placement 2009-03-03 13:43:46 Stephen J. Granite Amplitude ,P, Minimum Left. QRS axis from -30 degrees through -90 degrees in leads I, II, III. (The algebraic sum of major positive and major negative QRS waves must be zero or positive in I, negative in III, and zero or negative in II.) Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 A-V dissociation with ventricular pacemaker (with capture). http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 The minimum duration (time) between successive peaks of R waves in a particular set of RR intervals. NCI Thesaurus electrical potential : lead right arm 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 Electrical Potential : Lead CM6 ,per V6 placement 2009-04-27 16:03:38 Supraventricular rhythm persistent. QRS duration < 0.12 sec; and absent P-waves or presence of abnormal P-waves (inverted or flat in aVF); and regular rhythm. Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite V9 2009-03-04 10:11:27 2009-03-04 10:11:27 E Stephen J. Granite Stephen J. Granite NCI Thesaurus 2009-03-03 15:05:35 An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but the standard lead positions have been modified so that all leads on the chest are part of a single electrode pad. Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 QS pattern when initial R-wave is present in adjacent lead to the right on the chest, in any of leads V2, V3, V4,V5, V6. Electrical potential : lead derived V5 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-04 10:11:27 Left arm Stephen J. Granite 2009-03-03 13:43:46 Electrical Potential : Lead A4 ( Auxillary Unipolar lead #4) Stephen J. Granite 2009-03-04 10:11:27 -aVR Stephen J. Granite 2009-03-03 15:05:37 NCI Thesaurus An electrocardiogram (ECG) lead placement whereby the limb leads are placed on the torso for easier and faster application in emergency situations. The entire beat from the beginning of the P wave to the end of the T wave, excluding the U wave. Stephen J. Granite HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf Sinoatrial arrest. Unexpected absence of P, QRS and T, plus a R-R interval at a fixed multiple of the normal interval, +/- 10%. Stephen J. Granite 2009-04-27 16:03:38 Stephen J. Granite 2009-03-03 13:43:46 electrical potential : lead CM5 per V5 placement 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 The average (mean) duration (time) of the QT interval, obtained from a set of measurements of the QT interval. The QT interval is defined as the time from the beginning of the QRS complex to the end of the T wave, representing the time it takes for the ventricles to depolarize and subsequently repolarize. In some cases, the Q wave will be absent, in which case the QT interval is measured from the beginning of the R wave to the end of the T wave. NCI Thesaurus Complete right bundle branch block (RBBB). (Do not code in the presence of 6-1, 6-4-1, 6-8, 8-2-1 or 8-2-2.) QRS duration >= 0.12 sec in a majority of beats in any of leads I, II, III, aVL, aVF, plus: R' > R in V1 or V2; or QRS mainly upright, with R peak duration >= 0.06 sec in V1 or V2; or S duration >R duration in all beats in lead I or II. (7-1 suppresses 1-2-3, 1-2-7, 1-2-8, 1-3-2, 1-3-6, all 2, 3, 4, 5, 9-2, 9-4, 9-5 codes. Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Technical problems which interfere with coding. 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf http://www.epi.umn.edu/ecg/mncode.pdf Incomplete right bundle branch block. QRS duration < 0.12 sec in each of leads I, II, III, aVL, aVF, and R' > R in either of leads V1, V2 .(Code as 3-2 in addition if those criteria are met. 7-3 suppresses code 1-2-8.) 2009-04-27 16:03:38 Stephen J. Granite 2009-03-04 10:11:27 Stephen J. Granite Stephen J. Granite HL7 aECG Implementation Guide (http://www.amps-llc.com/UsefulDocs/aECG_Implementation_Guide.pdf) 2009-03-03 13:43:46 Fused waveform containing a T wave and U wave Stephen J. Granite Electrical potential : Lead CC7, per V7 and V7R placement 2009-03-03 13:43:46 Stephen J. Granite 2009-04-27 16:03:38 No STJ depression as much as 0.5 mm, but ST segment downward sloping and segment or T-wave nadir ! 0.5 mm below P-R baseline http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-04 10:11:27 A dipole with the positive (red) electrode on the left leg and the negative electrode derived from two other electrodes. The negative electrode is a combination of the right arm (white) electrode and the left arm (black) electrode, which "augments" the signal of the positive electrode on the left leg. Stephen J. Granite http://en.wikipedia.org/wiki/Electrocardiogram http://en.wikipedia.org/wiki/Region_of_interest A Region of Interest, often abbreviated ROI, is a selected subset of samples within a dataset identified for a particular purpose. Stephen J. Granite 2009-03-03 13:31:21 Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead derived V6 Stephen J. Granite 2009-03-03 13:43:46 NCI Thesaurus 2009-03-03 15:05:36 An electrocardiogram (ECG) lead placement for determining 3 orthogonal components X (back to front), Y (right to left) and Z (foot to head) of the heart. This system places the electrodes closer to the heart to achieve better orthogonality and a homogeneous lead field. Stephen J. Granite 2009-03-04 10:11:27 Z Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 Electrical potential : lead CM4 ,per V4 placement 2009-03-03 13:43:46 Stephen J. Granite 2009-04-27 16:03:38 Technical problems which do not interfere with coding. http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Stephen J. Granite Electrical potential : lead external pacing lead: anterior-posterior 2009-03-03 13:43:46 Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Sinoatrial block. Unexpected absence of P, QRS and T, preceded by progressive shortening of P-P intervals. (R-R interval at a fixed multiple of the normal interval, +/- 10%.) Stephen J. Granite Intermittent right bundle branch block. Same as 7-2-1 but with presence of normally conducted QRS complexes of different shape than the RBBB pattern. 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite Sinus tachycardia (over 100/min). http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-03 13:43:46 http://medical-dictionary.thefreedictionary.com/R+wave The initial upward deflection of the QRS complex, following the Q wave in the normal electrocardiogram and representing early depolarization of the ventricles. Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite Intraventricular block. QRS duration >= 0.12 sec in a majority of beats in any of leads I, II, III, aVL, aVF. (7-4 suppresses all 2, 3, 4, 5, 9-2, 9-4, 9-5 codes.) http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 Stephen J. Granite STJ depression >= 1.0 mm and ST segment upward sloping or U-shaped 2009-03-03 13:43:46 End time of TU complex Stephen J. Granite Electrical potential : (CR5) Stephen J. Granite 2009-03-03 13:43:46 The maximum duration (time) of the JT interval, obtained from a set of measurements of the JT interval. The JT interval is defined as the time from the J point (end of ventricular depolarization, the point at which the QRS meets the ST segment) to the end of the T wave (representing the end of ventricular repolarization). NCI Thesaurus 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 time period PQ NCI Thesaurus 2009-02-27 12:49:51 QRS complex is a portion of the EKG tracing that represents depolarization of the ventricular myocardium. Normally the ventricles are activated simultaneously. Stephen J. Granite 2009-03-03 13:43:46 electrical potential : lead CM3 ,per V3 placement Stephen J. Granite Stephen J. Granite Material anatomical entity which is generated by coordinated expression of the organism's own genes that guide its morphogenesis; has inherent 3D shape; its parts are connected and spatially related to one another in patterns determined by coordinated gen 2009-03-04 10:11:27 FMA 2009-03-03 13:43:46 Electrical potential : lead derived II Stephen J. Granite 2009-03-03 15:05:36 NCI Thesaurus An electrocardiogram (ECG) lead placement for determining 3 orthogonal components X (right to left direction), Y (foot to head direction) and Z (back to front direction) of the heart. For this method a minimum of 4 electrodes are needed that represent the right arm, left arm, left leg and back. However, ususally 7 electrodes are used to avoid dependence on the dipole location and facilitate interpretation. Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 15:05:38 NCI Thesaurus An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but the standard lead positions have been modified so that the negative reference is at CM5 and the active electrode is at the left leg position. Stephen J. Granite Electrical potential : lead MCL2, per V2 placement 2009-03-03 13:43:46 Elecrtical Potential : lead J (Nebb-inferior) 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf (Do not code in presence of low-voltage QRS, code 9-1, WPW 6-4-1, ventricular conduction defects, or 7-1-1, 7-2-1, and 7-4.) Sinus bradycardia (under 50/min). Stephen J. Granite 2009-04-27 16:03:38 http://www.epi.umn.edu/ecg/mncode.pdf 2009-03-03 15:05:37 NCI Thesaurus Stephen J. Granite An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but the standard lead positions have been modified so that the bipolar lead groups place the negative of the reference electrode over the manubrium (CM5), the right scapula (CB5), V5R (CC5) or on the forehead (CH5) and the active electrode at V5. Electrical potential : negative low right scapula 2009-03-03 13:43:46 Stephen J. Granite Stephen J. Granite 2009-03-03 13:43:46 PMID(3171455,220,F7:0:2) Stephen J. Granite 2009-03-03 13:43:46 The average (mean) duration (time) of the PR interval, obtained from a set of measurements of the PR interval. The PR interval is defined as the time from the beginning of the P wave (representing the onset of atrial depolarization) to the beginning of the R wave (representing the onset of ventricular depolarization). In some cases, a Q wave will precede the R wave, in which case the PR interval is measured from the beginning of the P wave to the beginning of the Q wave. NCI Thesaurus Amplitude, T , Minimum Stephen J. Granite 2009-03-03 13:43:46 http://www.epi.umn.edu/ecg/mncode.pdf Stephen J. Granite 2009-04-27 16:03:38 Other arrhythmias. Heart rate may be recorded as a continuous variable. 2009-03-03 15:05:35 NCI Thesaurus An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but the position of the leads is unspecified. Stephen J. Granite Quotient of quantities of the same kind for different components within the same system. 2009-03-03 13:43:46 Stephen J. Granite NCI Thesaurus Stephen J. Granite 2009-03-04 10:11:27 A Electrical potential : lead MCL1,per V1 placement Stephen J. Granite 2009-03-03 13:43:46 Stephen J. Granite 2009-03-03 13:43:46 Electrical potential : lead CM2, per V2 placement 2009-03-03 13:43:46 Stephen J. Granite STJ depression >= 0.5 mm and < 1.0 mm and ST segment horizontal or downward sloping Stephen J. Granite http://www.epi.umn.edu/ecg/mncode.pdf 2009-04-27 16:03:38 End time of T wave Stephen J. Granite 2009-03-03 13:43:46 Time period QTU Stephen J. Granite 2009-03-03 13:43:46