heart block

Introduction

A delay in conduction of electrical impulses through the conduction system of the heart. It may result in a reduction of heart rate (AV block) or a widening of the QRS complex without change in heart rate (bundle branch block).

More general terms

• cardiac arrhythmia

More specific terms

• atrioventricular (AV) block
• bundle branch block
• congenital heart block
• familial heart block
• sinoatrial exit block