Supraventricular extrasystole
Premature extra systole is circled on the right. The normal looking narrow QRS indicates a supraventricular origin.
A supraventricular extrasystole (SVES) is an extrasystole or premature electrical impulse in the heart, generated above the level of the ventricle. This can be either a premature atrial contraction or a premature impulse from the atrioventricular node. SVES should be viewed in contrast to a premature ventricular contraction which has a ventricular origin and the associated QRS changes.
External links
- Supraventricular extrasystole definition from the Centre for Cancer Education, University of Newcastle upon Tyne
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