[Etiopathogenesis of the inflammation process and the incidence of urinary tract infections].

Etiopathogenesis of inflammatory processes of the urinary tract, mainly of obstructive uropathy and chronic pyelonephritis, is reviewed. The most frequent cause of obstruction is renal calculosis; in the pathogenesis of chronic pyelonephritis the following factors are of great importance: renal and urethral anomalies, renal stones, pregnancy, bladder instrumentation as catheterisation, etc. We analyzed 2101 random by selected hospital patients and found significant bacteriuria in 740 (35 p.c.) of them. The most frequent cultured bacteria which caused urinary infection were: Proteus strains (29.3 p.c), E. coli (27.5 p.c.) and Pseudomonas aerug. (13,6 p.c.) Significant bacteriuria was more frequent in men than in women, but E. coli was more frequent in women (71.5 p.c.). Proteus, Pseudomonas and Klebsiella were more frequent in men. It should be noted that the majority of patients with positive urinary cultures were subjects treated at the Urology Department; and that men prevailed. This is the reason why our results related to the causing bacteria differed from those found in general population.