Conduction Disorders

Conduction Disorders

First Degree AV Block

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Overview

First degree AV block indicates delayed conduction between the atria and the ventricles.
- Look For
- Prolonged PR interval >200ms (5mm).

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Levites R, Haft JI. Significance of first degree heart block (prolonged PR interval) in bifascicular block. American Journal of Cardiology. 1974 Sep 1;34(3):259-64.

Meek S, Morris F. ABC Of Clinical Electrocardiography: Introduction. British Medical Journal 2002; Vol. 324, No. 7335; pp. 470-473 Money-Kyrle, Andrew. ECG interpretation made simple. GP (Nov 12, 2010): 36-37.