First-degree atrioventricular block

MONDO:0000466

A disorder characterized by an electrocardiographic finding of prolonged PR interval for a specific population. For adults one common threshold is a PR interval greater than 0.20 seconds.

Also known as: AV block first degree, atrioventricular block first degree, atrioventricular block, first degree, first degree AV block, first degree atrioventricular block

34 clinical trials for this condition and its sub-types, 1 tagged with First-degree atrioventricular block itself.

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↑ Atrioventricular block (63)

Including sub-types (34) Tagged with First-degree atrioventricular block (1)

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New pacemaker approach could reduce heart failure risk

Disease control Recruiting now

This study compares two pacemaker methods for people with a slow heart rate: standard right ventricular pacing and a newer 'physiological pacing' that targets the heart's natural conduction system. Researchers will track 2,600 participants over time to see which method better pre…

Sponsor: Imperial College London • Aim: Disease control

Last updated Jul 24, 2026 00:00 UTC

First-degree atrioventricular block

Where it sits in the disease tree

New pacemaker approach could reduce heart failure risk