Necrotizing soft tissue infections: a surgical narrative review

Necrotizing soft tissue infections represent a spectrum of diseases characterized by extensive necrosis involving the skin, subcutaneous tissues, fascia or muscles. These infections are generally severe and rapidly progressive, often accompanied by sepsis, septic chock, multiple organ failure and, ultimately, death. Several classifications have been developed based on multiple parameters, such as the anatomical location of the disease, the depth of the lesion or the microbiology. Numerous clinical factors predispose individuals to the development of necrotizing soft tissue infections. The clinical presentation is not always characterized by local signs and systemic symptoms of infection, which can lead to delays in both diagnosis ad treatment. Broad-spectrum antibiotic directed at the likely organisms is essential early in the treatment course, but do not substitute surgical management. Antibiotic therapy should be subsequently tailored to the etiologic micro-organism. Rapid recognition and early surgical intervention form the mainstay of management of necrotizing soft tissue infections. Initial surgical debridement should be promptly performed preferably at the presenting hospital, when adequate infrastructure and personnel are available. Transfer to a referral center may be necessary for definitive surgical and complex wound care. Most patients require more than one debridement. A multidisciplinary approach is also essential to improve the results in the treatment of these patients.