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[Doppler echocardiographic determination of the degree of tricuspid valve insufficiency in patients with ventricular septal defects].

Prior to and following the surgical plasty of ventricular septal defects, the tricuspid valve was evaluated in 106 patients, by employing two-dimensional and Doppler echocardiographies. Seventy-seven patients were followed up for 6 months to 2 years after the operation. Tricuspid valve failure was regarded to be pansystolic turbulent regurgitation blood flow which had been revealed only in 4 patients before the operation. Two weeks following the operation, most patients were found to have tricuspid valvular pansystolic turbulent regurgitation blood flow which remained only in 29% of the cases in late follow-up periods. Tricuspid valve failure failed to be clinically evident in these patients. It is concluded that Doppler echocardiography is an effective and highly sensitive tool in the diagnosis of tricuspid valve failure even when it runs, showing no clinical signs.