This week's topic is Tricuspid regurgitation:

This week’s topic is Tricuspid regurgitation:

Approximately 30% of patients with severe MR may also have severe TR, and up to 80% of patients referred for echocardiography have some degree of TR.

TR is usually (>75% of cases) functional, i.e. secondary to other disease process, most often mitral and aortic valve disease and atrial fibrillation. The main cause is pulmonary hypertension secondary to MV disease. Congenital TR is usually due to Ebstein’s anomaly. Pacemaker, and especially ICD lead placement.