[Express method for evaluating the efficiency of bladder droplet irrigation]

The catalase test is proposed for objective and rapid evaluation of the efficiency of droplet irrigation of the bladder after operations on the prostate, bladder, and urethra. Three milliliters of irrigation fluid is collected from the bladder drainage into a tube with 0.5 ml 3% hydrogen peroxide solution. If catalase is present in the lavage fluid (this enzyme is present in erythrocytes, leukocytes, and bacteria), hydrogen peroxide is degraded and oxygen is released. In a positive test gas bubbles and foam appear on the surface of the mixture. Three degrees of positive catalase test are defined. The rate and volume of perfusion are regulated with consideration for the test results; constant irrigation can be replaced by fractionation; negative results of the test allow discontinuation of irrigation. The rapid method was clinically tried in 20 patients with good results.