Relation between ankle-brachial index and extent of coronary stenosis in the elderly coronary artery disease
YAN Shan
TIAN Xiao-yi
ZHANG Xue-feng
LI Jiang-jin
Abstract：Objective To observe the relation between ankle-brachial index (ABI)and the extent of coronary stenosis and evaluate the usefulness of ABI for predicting the extent of coronary stenosis in elderly coronary artery disease (CAD).Methods Ninety-eight consecutive patients (age ≥ 65) who underwent coronary angiography were studied.All patients underwent ABI evaluation and blood biochemical examination in addition to history collection.We analyzed the relation between ABI and SYNTAX score,and the difference of ABI among patients with no CAD,1-vessel,2-vessel CAD and 3-vessel or main trunk CAD.Results ABI was inversely correlated with SYN-TAX score.ABI reduced significantly(P ＜ 0.01) in patients with 3-vessel or left main lesion CAD.Among 1-vessel or 2-vessel CAD,there was no significant difference in ABI.The corresponding area under the receiver operating characteristic (ROC) curve in 3-vessel or main trunk CAD was (0.748,95 ％ CI:0.668-0.829,P ＜ 0.01).ABI ＜0.9 had relatively high specificity(78.5％) and sensitivity(67.6％) for predicting the presence of 3-vessel disease or left main trunk CAD.In multivariate logistic regression analysis,ABI ＜ 0.9 was the independent predictor for 3-vessel disease or left main trunk CAD after adjusting for other variables.Conclusion Old patients ABI is inversely and significantly correlated with the extent of coronary stenosis.ABI ＜ 0.9 has relatively high specificity and sensitivity for predicting the presence of 3-vessel or left main trunk CAD.
Keywords：Coronary diseaseAnkle brachial indexCoronary artery
Publication Date：2013-08-30
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：3( 1045-1047 )