Factor Associated with Abnormal Ankle-Brachial Index Among Diabetic Patients in Songklanagarind Hospital: A Retrospective Cohort Study

Abstract

Objective: To find the correlation between type 2 diabetic patients who had abnormal ankle-brachial index (ABI) among factors affected diabetes and cardiovascular outcomes including acute coronary syndrome (ACS), myocardial infarction (MI), coronary revascularization stroke, renal replacement therapy, leg revascularization and limb amputation Material and Methods: Retrospective cohort study collecting the data of 548 diabetic patients examined ABI at Outpatient Departments from 1st January 2009 to 31st December 2015. Results: From 548 medical records including only normal-ABI group and low-ABI group, we found that hypertension, chronic kidney disease (CKD), smoking, history of previous MI, history of previous stroke and age were the significant associated factor of low-ABI. The survival analyses revealed the significantly higher rate of ACS, MI, and coronary revascularization in low-ABI group (p-value=0.04, <0.01, <0.01 respectively) after exposed to low-ABI around 4 years. However, the study found no significant difference of other outcomes between the 2 groups. Conclusion: Songklanagarind’s diabetic patients with low-ABI were associated with the significantly higher rate of multiple cardiovascular risk factors including hypertension, CKD, smoking, history of previous MI, history of previous stroke and age and they tend to significantly experience more ACS, MI and coronary revascularization after 4 years exposed to low-ABI.