J Korean Surg Soc.
1999 Dec;57(Suppl):1008-1015.
Clinical Observation of Bile Culture and Chronological Change of Bacteriology
- Affiliations
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- 1Department of Surgery, College of Medicine, Ewha Womans' University.
Abstract
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BACKGROUND: Intraoperative collection of bile and a bile culture are of use in predicting bacterial infection in the biliary system. The aim of this study was to identify chronological changes in the bacteriology of the bile in the age and sex distributions for biliary tract disease of the patients.
METHODS
We retrospectively reviewed the clinical records of 722 patients who had been operated on for biliary tract disease at the Department of Surgery Ewha Womans University Hospital, from Jan. 1979 to July 1998 and on whom intraoperative bile culture had been performed. We divided the 722 patients into two group based on the time of their treatment, period A being 1979-1988 and period B being 1989-1998. The statistical analysis was done by using the Mantel-Haenszel Chi-Square test.
RESULTS
The overall bile culture positive rate was 56% (404 cases), and the male-to-female ratio was 1:1.64. There was no significant statistical difference in the sex ratio between the two periods (period A: 1:1.78, period B: 1:1.55) (p>0.05). Overall, the most commonly isolated organism in the bile was Escherichia coli (137 cases, 30%). Comparing the two periods, we found that the Enterococcus species was an organism found increasingly in biliary tract infections (period A: 0%; period B: 17%) whereas infection by Escherichia coli was significantly decreased in the latter period (period A: 43%; period B: 28%) (p<0.05). The sixth decade (29.1%) was the most prevalent age overall. The age distribution for period A showed no statistical difference between the 5th (21.58%) and the 7th decades (21.94%), but there was significant difference between the 7th (29.95%) and the 5th decades (16.89%) in the age distribution for period B (p<0.05).
CONCLUSIONS
According to the above results, we concluded that there were significant chronological changes in the bacteriology of the bile & in the age distributions between the two periods, but no such difference was observed between the sex distribution.
