[The incidence of urinary tract infections and urinary lactate dehydrogenase levels in 50 pregnant women].

The incidence of urinary tract infections and, the levels of urinary lactic dehydrogenase using the kinetic method have been studied in the bladder urine obtained by urethral catheterization in 50 pregnant women. This incidence of UTI was 18 percent. The commonly isolated organism was E. coli. The mean total urinary LDH level in all cases was 21.48 +/- 2.70 mU/ml. The mean level of LDH5 was 8.14 +/- 1.01 mU/ml in 23 pregnant cases studied. The total urinary LDH activity increased with the age of the pregnant and the number of pregnancies. There was no significant difference between infected and uninfected women in their total urinary LDH and urinary LDH5. No renal infection in this series could be determined as indicated by high levels of LDH5.