Atrial Fibrillation by ECG Finding

**Semantic type:** Finding

**Definition:** An electrocardiographic finding of a supraventricular arrhythmia characterized by the replacement of consistent P waves by rapid oscillations or fibrillatory waves that vary in size, shape and timing and are accompanied by an irregularly irregular ventricular response. (CDISC)

**Synonyms:** - AF - AF - AFib - ATRIAL FIBRILLATION - Atrial Fibrillation - Atrial Fibrillation by EKG Finding - Atrial fibrillation