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踝臂指数(ankle-brachial index,ABI)是踝部动脉(通常取胫后动脉或足背动脉)收缩压与上臂肱动脉收缩压的最高值之比。其原理是根据动脉狭窄程度所达到临界水平并导致狭窄远端灌注压降低,其程度大致与病变程度呈正相关。最初是用于诊断下肢外周动脉缺血的一种简便、无创、有效的方法,但最近几年国内外有关 ABI 多项大规模的临床实验发现,ABI 不再仅
Ankle-brachial index (ABI) is the ratio of the systolic blood pressure of the ankle artery (usually the posterior tibial artery or dorsalis pedis artery) to the highest systolic blood pressure of the brachial artery of the upper arm. The principle is based on the degree of arterial stenosis reached the critical level and lead to decreased stenosis distal perfusion pressure, the extent of the extent of the disease is generally positive correlation. Initially used to diagnose peripheral ischemia of lower extremities, a simple, noninvasive and effective method, but in recent years a large number of domestic and international ABI clinical trials found that ABI is no longer the only