First degree AV block physical examination

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Zand, M.D.[2] Raviteja Guddeti, M.B.B.S. [3]

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Overview

First degree AV block may be an incidental finding on an routine ECG. General assessment about signs of underlying cardiac disease including auscultation for murmurs or additional heart sounds, assessment of JVD, peripheral edema, evaluation of skin about cyanosis, clubbing, or other signs of cardiac disease is warranted.

Probable physical exam findings on auscultation include:

The duration of this murmur may be reduced after administration of atropine which shortens the PR interval.

↑ Ishikawa T, Kimura K, Miyazaki N, Tochikubo O, Usui T, Kashiwagi M, Ishii M (November 1992). "Diastolic mitral regurgitation in patients with first-degree atrioventricular block". Pacing Clin Electrophysiol. 15 (11 Pt 2): 1927–31. doi:10.1111/j.1540-8159.1992.tb02996.x. PMID 1279574.