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Revista chilena de infectología

versión impresa ISSN 0716-1018


BLU F., Antonieta et al. Utility of stool culture in inpatient. Rev. chil. infectol. [online]. 2005, vol.22, n.1, pp.58-62. ISSN 0716-1018.

Several studies have concluded that it is inappropriate to perform stool cultures (SC) to inpatients that have stayed hospitalized three days or more because nosocomial diarrhea is not due to enteric pathogenic bacteria that are searched through this exam. The aim of this paper was to analyze the SC yield performed to patients hospitalized in the UC Health Net since January to December 2002 and the rate of positive results obtained depending on the length of hospitalization in order to define if international guidelines are useful to the national reality. During twelve months 3474 SC were evaluated, 458 (13.2%) belonged to inpatients. Of them 16 (3.5%) were positive, 13 were obtained on the first day, 2 at the second day and 1 at the fifth day of hospitalization. Only 1/190 (0.5) SC obtained after two days of hospitalization yielded a positive result. These results reinforce the international recommendation of not performing SC to inpatients that have stayed more than three days at the hospital; besides, considering previous figures, we suggest to make a cutoff at day two of hospitalization, after two days there is no a significant clinical impact. This strategy means to reduce 41% of these analyses and to save the corresponding money

Palabras clave : Stool culture; Nosocomial diarrhea; Enteric pathogenic bacteria.

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