Reactive hyperemia check. This examination is similar to an ABI or possibly a treadmill test but applied for those who are unable to walk on a treadmill. 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�