Wet gangrene

Introduction Wet gangrene occurs mostly in the internal organs (intestines, uterus, lungs, etc.) that communicate with the outside world, and can also be seen in limbs (when accompanied by congestion and edema). Necrotic tissue has more water content, so the spoilage bacteria are seriously infected, and the local area is obviously swollen, showing dark green or dirty black. The spoilage bacteria break down proteins, produce sputum, skatole, etc., causing bad odor. Because the lesions develop faster and the inflammation is more diffuse, there is no obvious dividing line between the necrotic tissue and the healthy tissue. At the same time, the toxic products and bacterial toxins produced by tissue necrosis can be absorbed, which can cause symptoms of systemic poisoning and even death due to toxic shock.

Cause

Due to the high water content of the necrotic tissue, the spoilage bacteria are seriously infected, and the local area is obviously swollen, and it is dark green or dirty black. The spoilage bacteria break down proteins, produce sputum, skatole, etc., causing bad odor. Because the lesions develop faster and the inflammation is more diffuse, there is no obvious dividing line between the necrotic tissue and the healthy tissue. At the same time, the toxic products and bacterial toxins produced by tissue necrosis can be absorbed, which can cause symptoms of systemic poisoning and even death due to toxic shock.

an examination

Related inspection

Urine routine

Histopathology: -hemolytic streptococcus is easily isolated from the margin of necrotic tissue. At the same time, the toxic products and bacterial toxins produced by tissue necrosis can be absorbed, which can cause symptoms of systemic poisoning and even death due to toxic shock.

Differential diagnosis

Differential diagnosis of wet gangrene:

1, dry gangrene (dry gangrene): mostly seen at the extremities of the extremities, such as atherosclerosis, thromboangiitis obliterans and frostbite and other diseases. At this time, the artery is blocked and the venous return is smooth, so the necrotic tissue has less water, and the surface water is easy to evaporate, causing the lesion to dry and shrink, showing a dark brown color, and there is a clear boundary line with the surrounding healthy tissue. Since necrotic tissue is relatively dry, spoilage infections are generally mild.

2, gas gangrene (gas gangrene): a special type of wet gangrene, mainly seen in severe deep muscle trauma and combined with anaerobic infections such as Clostridium perfringens. When the bacteria break down the necrotic tissue, a large amount of gas is generated, so that the necrotic tissue contains a large amount of air bubbles, and there is a "burst" sound. Gastric gangrene lesions develop rapidly, the symptoms of poisoning are obvious, and the consequences are serious, requiring urgent treatment.

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