ECG Rhythm Interpretation

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Information about ECG Rhythm Interpretation

Published on June 24, 2008

Author: medespace


ECG Rhythm Interpretation : ECG Rhythm Interpretation Module IECG Basics Share what you know, learn what you don’t Course Objectives : Course Objectives To recognize the normal rhythm of the heart - “Normal Sinus Rhythm.” To recognize the 13 most common rhythm disturbances. To recognize an acute myocardial infarction on a 12-lead ECG. Learning Modules : Learning Modules ECG Basics How to Analyze a Rhythm Normal Sinus Rhythm Heart Arrhythmias Diagnosing a Myocardial Infarction Advanced 12-Lead Interpretation Normal Impulse Conduction : Normal Impulse Conduction Sinoatrial node AV node Bundle of His Bundle Branches Purkinje fibers Impulse Conduction & the ECG : Impulse Conduction & the ECG Sinoatrial node AV node Bundle of His Bundle Branches Purkinje fibers The “PQRST” : The “PQRST” P wave - Atrial depolarization T wave - Ventricular repolarization QRS - Ventricular depolarization The PR Interval : The PR Interval Atrial depolarization + delay in AV junction (AV node/Bundle of His) (delay allows time for the atria to contract before the ventricles contract) Pacemakers of the Heart : Pacemakers of the Heart SA Node - Dominant pacemaker with an intrinsic rate of 60 - 100 beats/minute. AV Node - Back-up pacemaker with an intrinsic rate of 40 - 60 beats/minute. Ventricular cells - Back-up pacemaker with an intrinsic rate of 20 - 45 bpm. The ECG Paper : The ECG Paper Horizontally One small box - 0.04 s One large box - 0.20 s Vertically One large box - 0.5 mV The ECG Paper (cont) : The ECG Paper (cont) Every 3 seconds (15 large boxes) is marked by a vertical line. This helps when calculating the heart rate. NOTE: the following strips are not marked but all are 6 seconds long. 3 sec 3 sec End of Module IECG Basics : End of Module IECG Basics Proceed to Module I Practice Quiz on WebCT

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