ECG Rhythm Interpretation

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ECG Rhythm Interpretation

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Presentation Transcript

ECG Rhythm Interpretation : 

ECG Rhythm Interpretation Module IECG Basics http://www.medespace.net 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