Clinical Trial: Klebsiella Pneumoniae Necrotizing Fasciitis: Clinical and Microbiological Features

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

Official Title: Klebsiella Pneumoniae Necrotizing Fasciitis: Clinical and Microbiological Features

Brief Summary: This is a retrospective descriptive study on the clinical and microbiological features of Klebsiella Pneumoniae Necrotizing Fasciitis.

Detailed Summary:

Background. Necrotizing fasciitis is a rapidly progressive, life-threatening infectious disease that primarily involves soft tissue. Traditionally, group A streptococcus is the major cause of this disease. In recent years, however, there are increasing case reports of necrotizing fasciitis solely caused by Klebsiella pneumoniae. There are limited data regarding clinical and microbiological features of K. pneumoniae strains causing this disease.

Methods. We plan to review the medical records of necrotizing fasciitis cases treated during 1997-2010 at National Taiwan University Hospital, and compare the clinical features of cases caused by K. pneumonia and cases caused by group A streptococcus. We also plan to retrospectively identify necrotizing fasciitis-associated K. pneumoniae strains stored at -80oC at National Taiwan University Hospital, and perform virulence-associated hypermucoviscosity phenotyping, wzy (magA locus) and rmpA genotyping, and detection of 20-kb kfu/PTS genomic region and other iron-uptake systems.

Expected Results. This study is expected to yield the following important information: (1) The prevalence of monomicrobial K. pneumoniae necrotizing fasciitis cases among all necrotizing fasciitis cases at our hospital during the study period; (2) The distinct clinical features of K. pneumoniae necrotizing fasciitis, using group A streptococcal necrotizing fasciitis as the comparison group; (3) The microbiologic characteristics of K. pneumoniae strains causing monomicrobial necrotizing fasciitis, including hypermucoviscosity phenotype, wzy (magA locus) and rmpA genotype, and the presence of iron-uptake systems.

Sponsor: National Taiwan University Hospital

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Information By: National Taiwan University Hospital

Dates:
Date Received: June 7, 2010
Date Started: July 2009
Date Completion:
Last Updated: November 14, 2012
Last Verified: May 2012