Supraventricular Extrasystoles, CTCAE

**Semantic type:** Finding

**Definition:** An adverse event characterized by premature atrial contractions of the heart caused by signals originating from ectopic atrial sites or the atrioventricular node.

**Synonyms:** - Supraventricular extrasystoles (Premature Atrial Contractions; Premature Nodal/Junctional Contractions)