Association between modified CHA2DS2-VASc Score with Ankle-Brachial index < 0.9

The ankle-brachial index (ABI) is a reliable diagnostic examination for peripheral arterial occlusive disease (PAOD). We previously reported CHADS(2) score was significantly correlated with PAOD. However, the association between CHA(2)DS(2)-VASc score and ABI < 0.9 is not evaluated in the literature. The aim of the present study was to investigate whether CHA(2)DS(2)-VASc score has a strong association with PAOD. We enrolled 1482 patients in this study. PAOD was defined as ABI < 0.9 in either leg. Vascular disease in CHA(2)DS(2)-VASc score was modified as vascular disease except PAOD. Of the 1482 subjects, the prevalence of ABI < 0.9 was 5.6%. Multivariate analysis showed that the increased age, decreased estimated glomerular filtration rate and increased modified CHA(2)DS(2)-VASc score (OR, 1.764; p < 0.001) were independent associated with ABI < 0.9. In addition, the percentage of ABI < 0.9 in patients with modified CHA(2)DS(2)-VASc score of 0, 1, and < 2 were 0%, 0.9%, and 0.7%, respectively (All < 1%). Our study demonstrated modified CHA(2)DS(2)-VASc score was significantly associated with ABI < 0.9. Calculation of modified CHA(2)DS(2)-VASc score might be useful in identifying patients with PAOD and in stratifying the risk of PAOD in non-AF patients.