2 Course ObjectivesTo 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.
3 Learning Modules ECG Basics How to Analyze a Rhythm Normal Sinus RhythmHeart ArrhythmiasDiagnosing a Myocardial InfarctionAdvanced 12-Lead Interpretation
4 Normal Impulse Conduction Sinoatrial nodeAV nodeBundle of HisBundle BranchesPurkinje fibers
5 Impulse Conduction & the ECG Sinoatrial nodeAV nodeBundle of HisBundle BranchesPurkinje fibers
6 The “PQRST” P wave - Atrial depolarization QRS - Ventricular depolarizationT wave - Ventricular repolarization
7 Atrial depolarization The PR IntervalAtrial depolarization+delay in AV junction(AV node/Bundle of His)(delay allows time for the atria to contract before the ventricles contract)
8 Pacemakers of the Heart SA Node - Dominant pacemaker with an intrinsic rate of beats/minute.AV Node - Back-up pacemaker with an intrinsic rate of beats/minute.Ventricular cells - Back-up pacemaker with an intrinsic rate of bpm.
9 The ECG Paper Horizontally Vertically One small box - 0.04 s One large box sVerticallyOne large box mV
10 The ECG Paper (cont)3 sec3 secEvery 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.
11 End of Module I ECG Basics Proceed to Module I Practice Quiz on your iROCKET Course