[Hemodynamic diagnosis of tricuspid insufficiency].

An analysis and comparison has been made of the value in the diagnosis and assessment of the degree of tricuspid incompetence of the following: the pressure curves of the right side of the heart, intracardiac phonocardiography and the venous dilution curves of ascorbic acid. The study was carried out on 49 patients, and a comparison made with selective right ventricular cineangiography, which was chosen arbitarily as a baseline. The information from the pressure curves and from intracardiac phonocardiography often contains errors of ommission or commission, but that from the venous dilution curves of ascorbic acid came out as the most reliable; these curves do tend to overestimate the degree of regurgitation, but they still allow us to reserve selective cineangiography, which is quantitatively a more precise method, for those cases in which the curves indicate a particularly severe degree of tricuspid incompetence.