[Hemodynamic studies in chronic terminal renal insufficiency--Effects of hemodialysis (Hd), hemofiltration (Hf) and ultrafiltration (Uf) procedures (author's transl)].

The hemodynamic parameters were evaluated before and after Hd, Hf, Uf procedures, in patients with chronic renal failure with either hypertension, oedema or acute pulmonary oedema. The arterial and wedge pressures were increased in all of these patients. Fluid removal corrected these pressures whatever procedure was used. There is a correlation between fluid removal and the variation of these pressures. The curves of the ventricular function showed a decrease of the mean myocardiac performance. Hd and Hf with an acetate solution decreased the systemic vascular resistances (SVR) and increased the cardiac index (CI). Hd and Hf with a bicarbonate solution had little influence on these parameters. Pure Uf increased the SVR and decreased the CI. The evaluation of the hemodynamic parameters gives important information on the nature of the disturbances in the cardio-circulatory function and allows by means of permanent monitoring to guide their correction. It also helps in the choice of the procedure to be used.