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[Bacteremic urinary infection in men: comparative study with bacteremic pyelonephritis in women].

OBJECTIVE
To compare the clinic and microbiologic characteristics of the extrahospitalary bacteremic urinary infections (EBUI) between men and women assisted in a 200 bed community hospital.


PATIENTS AND METHODS
A prospective study of the EBUI diagnosed in our hospital from January 1991 to April 1994 was carried out. Quantitative variables were evaluated with t Student analysis, chi 2 was used for the comparation of proportions. The logistic regression step-by-step model was used in order to find out which variables influenced that the microorganism causing EBUI was Escherichia coli.


RESULTS
107 episodes of EBUI were recorded, 39 men and 68 women, with the same microorganism in blood and urine. Significative diferences in age (70 +/- 17 years in men, 58 +/- 24 years in women); the presence of urinary tract alterations (49% men vs 12% women) and in the presence of indwelling urinary catheter (26% men vs 3% female) were found. E. coli was responsible in a major proportion (p = 0.03) of the EBUI in women that in men, but only age > 65 was selected as explaining variable with the logistic regression model.


CONCLUSIONS
The EBUI appears in old men with urinary tract alterations and/or manipulations, clearly different from the EBUI in women. Age greater than 65 years is the only predisponent factor of EBUI in men by bacteria other than E. coli.