Since 1984 the peritoneovenous shunt has been installed in 33 patients (10 females - 30.3%; 23 males - 69.7%) of the average age of 54 +/- 8, all in the phase of therapeutically resistant ascites (alcoholic cirrhosis 28 - 84.85%; 4 - 12.12% posthepatitic cirrhosis; and 1 - 3.03% hepatic amyloidosis). The control group consisted of 39 patients (11 females - 28.2% and 28 males - 71.8%) treated in an identical time span with the strict conduction of medicament-diet therapy. The aim of this study was to check the value of this method on our own clinical-patient material, and therefore establish the incidence of complications. By the use of a unique protocol we followed mortality, morbidity, body weight, belly circumference, diuresis, the ultrasonographic finding of the abdominal cavity and the complications which appeared. Out of the group operated on 19 (57%) of the patients died, and so did all the control group patients as well. The average life duration was 275 +/- 810 days in the group operated on, and 44 +/- 29 (p less than 0.005) in the control group. All those alive (14.33-42.42%) lived longer than six months. Six patients lived longer than one year (42.85%), 4 (28.47%) longer than two years, and one (7.14%) longer than three years. There is a statistically significant decrease in body weight, belly circumference, diuresis increase and the consequent ascites withdrawal. DIC occurred in 2 patients, shunt malposition in 2, saccular dilatation in 1, plastic peritonitis in 6, and ileus in 1 patient. Not one of the listed complications resulted by death.(ABSTRACT TRUNCATED AT 250 WORDS)