The results of bacteria isolated from the urine of inactive elderly patients with urinary incontinence in 1982, 87, 93 and 95 were compared and the chronological changes of urinary bacteria were analyzed. The following results were obtained: (1) The most common bacteria isolated from the patients in 1995 were D-group
Enterococcus, followed by
Providencia rettgeri, E. coli, Pseudomonas aeruginosa and
Proteus mirabilis. It is thought that the main cause of the more frequent isolation of
Enterococcus is an abuse of cephems and fecal contamination. (2) The most common bacteriaisolated from the patients who were managed with an indwelling urethral catheter were
Proteus and
Providencia species, and their incidence tended to decrease from 1982 to 1995. (3) Infection with
Pseudomonas species tended to increase, as did that
Staphylococcus species, especially Methicillin-resistant
Staphylococcus aureus and then decreased. Based on these findings, it is important to assess and treat dysuria before inserting an indwelling urethral catheter, and to selet an antibacterial agent that is effective in elderly patients with urinary incontinence and limited activity.
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