Do Take note that compression stockings are useful for prevention versus DVT, but won't be handy if DVT has now occurred. 干性坏疽：常见为肢端组织缺血坏死，干枯变黑并向躯干发展，直到血液循环足以防止坏死的地方停止。干性坏疽的病变界线清楚。早期干性坏疽的症状为患处表面发白，感觉钝痛和冷。在这个阶段局部改善循环有治愈的可能，其后则需要去除坏死组织。但不经处理的话，最终坏死部分也会自行脱落... https://sgvasculargrp.com/medical-condition/peripheral-arterial-disease/