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Atrioventricular block, EKG tracing This picture shows an ECG (electrocardiogram, EKG) of a person with an abnormal rhythm (arrhythmia) called an atrioventricular (AV) block. P waves show that the top of the heart received electrical activity. Each P wave is usually followed by the tall (QRS) waves. QRS waves reflect the electrical activity that causes the heart to contract. When a P wave is present and not followed by a QRS wave (and heart contraction), there is an atrioventricular block, and a very slow pulse (bradycardia).
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| Review Date: 8/12/2004 12:00:00 AM
Reviewed By: Elena Sgarbossa, M.D., Department of Cardiology, Rush-Presbyterian St. Luke’s Medical Ctr., Chicago, IL. Review provided by VeriMed Healthcare Network.
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