Common clinical misnomer refers to ECG pattern, not underlying pathophysiology

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HEARTBEAT

Common clinical misnomer refers to ECG pattern, not underlying pathophysiology

Chris Ellis

Chris Ellis

The term “trifascicular block” is a misnomer used to describe a combination of a right bundle branch block, an anterior (or posterior) left fascicular block and a first-degree atrioventricular block (a prolonged PR interval)
The term “trifascicular block” is a misnomer used to describe a combination of a right bundle branch block, an anterior (or posterior) left fascicular block and a first-degree atrioventricular block (a prolonged PR interval)

Consultant cardiologist Chris Ellis describes an older patient with a past history of severe aortic valve stenosis, treated with a bioprosthetic valve replacement. Her electrocardiogram reveals a specific pattern with a common clinical misnomer

Key points, “Trifascicular block” is a precursor to a complete heart block (third-degree AV block), so, although no treatment is required, annual review should be, Pract Green w Pale Yellow