Asymptomatic Bacteriuria in Schoolgirls

Lee, Sang Kon; Yang, Kou Young; Park, Chan Jeoung; Park, Young Euy

Abstract

One thousand one hundred forty nine (1149) young women, 13-21 years of age, were examined by urinalysis and bacteriologic methods for the frequency and natural course of asymptomatic bacteriuria. Five percent (58/1149) of the women were found to have a significant bacteriuria, of which 58.6% (34/58) had a transient colonization in the urinary tract and another 41.4 % had a persistent bacteriuria. 66.7% (16/24) of recurrent bacteriuric subjects had gram negative rod bacilli. In 8.6%(5/58) of asymptomatic bacteriuric subjects, symptomatic urinary tract infection developed within 6 months. An incidence of pyuria in asymptomatic urinary tract infection is 80%, but a sensitivity of pyuria to bacteriuria was low in asymptomatic urinary tract infection. A predictive value for detection of asymptomatic bacteriuria by pyuria was 19%. With urine collection by urethral catheterization a chance of contamination can be diminished, but may not be eliminated a chance of contamination from urethral mucosa. Randomized double blind study showed that asymptomatic bacteriuria can be effectively controlled by daily single dose of trimethoprim sufamethoxazole for five days.