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This is a retrospective descriptive study on the clinical and microbiological features of Klebsiella Pneumoniae Necrotizing Fasciitis.
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 1996-2009 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) , rmpA genotyping, and 20-kb kfu/PTS genomic region.
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.
Time Perspective: Retrospective
National Taiwan University Hospital
National Taiwan University Hospital
Published on BioPortfolio: 2014-07-24T14:01:05-0400
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Cervical necrotizing fasciitis is a progressive soft tissue infection with significant morbidity and mortality.
Necrotizing fasciitis (NF) is defined as a rare, rapidly progressive, and highly lethal skin infection characterized by necrosis of the fascia and subcutaneous tissue.
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Inflammation of the fascia. There are three major types: 1, Eosinophilic fasciitis, an inflammatory reaction with eosinophilia, producing hard thickened skin with an orange-peel configuration suggestive of scleroderma and considered by some a variant of scleroderma; 2, Necrotizing fasciitis (FASCIITIS, NECROTIZING), a serious fulminating infection (usually by a beta hemolytic streptococcus) causing extensive necrosis of superficial fascia; 3, Nodular/Pseudosarcomatous /Proliferative fasciitis, characterized by a rapid growth of fibroblasts with mononuclear inflammatory cells and proliferating capillaries in soft tissue, often the forearm; it is not malignant but is sometimes mistaken for fibrosarcoma.
A fulminating bacterial infection of the deep layers of the skin and FASCIA. It can be caused by many different organisms, with STREPTOCOCCUS PYOGENES being the most common.
A bony outgrowth on the lower surface of the CALCANEUS. Though often presenting along with plantar fasciitis (FASCIITIS, PLANTAR), they are not considered causally related.
Inflammation of the thick tissue on the bottom of the foot (plantar fascia) causing HEEL pain. The plantar fascia (also called plantar aponeurosis) are bands of fibrous tissue extending from the calcaneal tuberosity to the TOES. The etiology of plantar fasciitis remains controversial but is likely to involve a biomechanical imbalance. Though often presenting along with HEEL SPUR, they do not appear to be causally related.
A loss of mucous substance of the mouth showing local excavation of the surface, resulting from the sloughing of inflammatory necrotic tissue. It is the result of a variety of causes, e.g., denture irritation, aphthous stomatitis (STOMATITIS, APHTHOUS); NOMA; necrotizing gingivitis (GINGIVITIS, NECROTIZING ULCERATIVE); TOOTHBRUSHING; and various irritants. (From Jablonski, Dictionary of Dentistry, 1992, p842)
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