Utility of multiple-stool-specimen ova and parasite examinations in a high-prevalence setting

被引:82
作者
Cartwright, CP
机构
[1] Hennepin Cty Med Ctr, Clin Labs, Dept Lab Med & Pathol, Minneapolis, MN 55415 USA
[2] Univ Minnesota, Sch Med, Dept Lab Med & Pathol, Minneapolis, MN 55455 USA
关键词
D O I
10.1128/JCM.37.8.2408-2411.1999
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
A retrospective analysis of the results of 2,704 ova and parasite (O & P) examinations performed on stool specimens collected from 1,374 patients between October 1996 and September 1997 was performed to evaluate the utility of performing O & P examinations on multiple, independently collected stool specimens in a high-prevalence setting. A total of 995 specimens (36.8%) examined during the study contained parasites; 546 (20.2%) contained pathogenic organisms, The positivity rate (54.5%) for the patients from whom three specimens were examined was significantly higher than for the patients from whom either two specimens (33.3%) or a single specimen (19.8%) was submitted for examination, For the group of patients from whom at least 3 specimens were submitted for O & P examination, 373 independent opportunities for diagnosing infection with intestinal parasites could be analyzed. The first stool specimen collected proved to be adequate in only 75.9% (283 of 373) of evaluated cases; however, examination of two specimens increased the sensitivity of O & P detection to 92% (343 of 373). The third specimen collected provided additional information on only 30 of 373 occasions (8%). These data indicate that in populations with a high prevalence of intestinal parasitic infections, two independently collected stool specimens should be subjected to O & P examination to ensure adequate diagnostic sensitivity.
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页码:2408 / 2411
页数:4
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