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Title: A superior test for diagnosis of Clostridium difficile-associated diarrhea in Resource-Limited Settings
Authors: Darunee Chotiprasitsakul
Tavan Janvilisri
Sasisopin Kiertiburanakul
Siriorn Watcharananun
Surang Chankhamhaengdecha
Piyapong Hadpanus
Kumthorn Malathum
Mahidol University
Keywords: Medicine
Issue Date: 1-Jan-2012
Citation: Japanese Journal of Infectious Diseases. Vol.65, No.4 (2012), 326-329
Abstract: In this prospective cohort study, we investigated the prevalence of Clostridium difficileassociated diarrhea (CDAD) in adult patients with nosocomial diarrhea by performing enzyme immunoassay (EIA) for detecting toxins A and B and polymerase chain reaction (PCR) for detecting the presence of the tcdB gene in stool samples. We determined the factors associated with CDAD, and the treatment outcome of CDAD from May 2010 to January 2011. A total of 175 stool samples were tested by EIA and PCR. In total, 26.9z patients tested positive for C. difficile: 12.6z by EIA and 24.0z by PCR. The kappa coefficient and total agreement of both the tests were 0.46 and 83.2z, respectively. Onset of diarrhea after antibiotic administration for 10 days or more (OR, 2.71; 95z CI, 1.14-6.44; P = 0.024) and leukocyte count > 15,000 cells/mm 3 (OR, 3.12; 95z CI, 1.24-7.88; P = 0.016) were significantly associated with occurrence of CDAD. The non-response rate to CDAD treatment was 24.1z, and the all-cause mortality rate was 31.9z in the CDAD group as against 35.9z in the non-CDAD group (P = 0.721). In our study, the performance of direct PCR of stool samples for detecting tcdB was better, with the number of positive results for stool toxins A and B being twofold higher than that in the case of EIA. Patients who have diarrhea after receiving antibiotics for 10 days or more or those who have a leukocyte count of > 15,000 cells/mm 3 should be investigated for CDAD.
ISSN: 18842836
Appears in Collections:Scopus 2011-2015

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