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22 - Deep Soft-Tissue Infections: Necrotizing Fasciitis and Gas Gangrene

from Part IV - Clinical Syndromes – Skin and Lymph Nodes

Published online by Cambridge University Press:  05 March 2013

Stephen Ash
Affiliation:
Ealing Hospital
David Schlossberg
Affiliation:
Temple University School of Medicine, Philadelphia
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Summary

Necrotizing fasciitis (NF) and gas gangrene (GG) are serious infections of the deep soft tissue. They both carry a high morbidity and mortality. Early diagnosis and treatment is important and is the key to improving outcome. Broadly speaking, NF is an infection primarily of the fascia and deep soft tissue of the skin, whereas GG is usually an infection of the skeletal muscle.

Previously, NF has been subdivided into different categories based on anatomical site, but such classification is not helpful regarding the diagnosis and management of these dangerous conditions. Both GG and, particularly, NF are strongly associated with numerous underlying, premorbid risk factors (Table 22.1), each of which requires medical management to improve the prognosis of an individual patient.

Again, both conditions may be caused by one bacterial organism or, more commonly with NF, they may be polymicrobial and require treatment with broad spectrum or multiple antibiotics.

NECROTIZING FASCIITIS

Diagnosis

Necrotizing fasciitis is an uncommon, but severe, infection with a fulminant course and high mortality often following a history of trauma or surgery. The patient may go into rapid decline with necrosis of soft tissue and multisystem organ failure. The latter would appear to result from superantigenic overstimulation of the immune system and excessive production of cytokines.

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Publisher: Cambridge University Press
Print publication year: 2008

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