Tricuspid stenosis; physiologic criteria for diagnosis and hemodynamic abnormalities.

Physiologic criteria for the diagnosis of tricuspid stenosis have not been satisfactorily established. In an attempt to define these criteria the pressure gradients across the tricuspid valve during right ventricular diastole were analyzed in 10 patients with tricuspid stenosis and compared with the gradients in a group of patients who did not have this lesion. The diagnostic importance of the mean gradient is emphasized. Thehemodynamic abnormalities associated with the tricuspid stenosis