第三节冷伤（Third cold wounds）.docVIP

第三节冷伤（Third cold wounds） Third cold wounds Cold injury (cold, injury) is a local or systemic injury caused by low temperature invasion, which is characterized by non freezing Cold injury and freezing cold injury (frost, cold, injury) two categories. First, non freezing cold injury Non freezing cold injury is the contact of human body under 10 0C, freezing point above the low temperature, coupled with the damage caused by moist conditions, Including frostbite, trench foot, water immersion foot (hand) and so on. (1) chilblain (chilblain), frostbite is more common in winter, low temperature and relatively humid areas; good hair in the hands, feet, @tAli one!}t! Steam boil; Auricle and nasal tip. The lesion is mainly exposed to the cold environment above freezing point repeatedly, and the protection is poor. surface It is the skin that has urticant feeling or distending pain now, purplish red spot, papule or tubercle pathological changes, can bring oedema and scar of water. Median epidermis Capable of shedding, bleeding, erosion, or ulceration, resulting in paralysis or fibrosis. Chilblain is easy to relapse, and after the disease, local skin Chronic vasculitis of the skin and decreased resistance to skin. (two) trench foot and water immersion foot (hand) are non freezing injuries of the hands and feet. The trenches were full of wars Stand for a long time caused by the 1^-10 C ditch, water immersion foot (hand) is a long time exposure to cold environment caused by a More common in seamen, fishermen, paddy fields, labor and construction workers. The clinical manifestations of the body a long time exposure to cold and wet environment, arterial spasm, vascular skin strong contraction, The blood flow is slow and the effect of cell metabolism. The affected area initially feels absent and is exposed for 24^-48 hours to be treated locally After warming, the blood vessels dilate and the tissues respond to hyperemia. A sensation and burning pain ensued. Local edema arises Scar,