Gangrene:Tissuedeathdue to loss of adequatebloodsupply. Sometimes细菌invade such tissue and accelerate its decay. Dry gangrene is the death of tissue due tovascularinsufficiency without细菌linvasioninwhich the tissue dies, losessensationand simply dries up, blackens, and shrivels. Dry gangrene eventually requiresamputation. Gas gangrene occurs when body tissue is invaded by bacteria that thrive in areas of lowoxygencontent. These bacteria are calledanaerobic细菌and include theClostridiumfamilyof bacteria. The bacteria generate gas andpus; the tissues swells and can become painful. Wet gangrene requires urgent抗生素treatment and sometimes surgical drainage.
