Aims and Objectives: Prevalence of low Ankle-Brachial Index (ABI) in patients with Ischaemic Heart Disease. To compare the relationship between various physiological parameters like age, sex, and BMI with ABI. To compare the relationship between low ABI and number of coronaries involved.

Methodology: Inclusion Criteria: All the 1423 patients aged 23-90 years including 1047 male and 376 female undergoing coronary angiography in VS hospital. Exclusion Criteria: Critically ill or who had severe limb ischemia or patients with amputation were excluded. Statistical analysis was done by using SPSS 20.0 version. Univariate analysis was performed by applying the Pearson chi-squared test.

Results: In this study, 1423 patients were evaluated out of which 66 (4.6%) patients had ABI<0.9. Out of 66 patients with low ABI 60 (91%) were male and 6 (9%) were female, showing high prevalence in the male. In patients having low ABI shows 12 (18.2%) have SVD, 11(16.7%) have DVD, 26(39.4%) have TVD, comparing this with patients having normal ABI, shows P value of 0.035 which is significant. 411 patients were diabetic including 40 (60.6%) patients having low ABI and 371 (27.3%) patients having normal ABI, shows P value of 0.000 which is highly significant.

Conclusion: ABI is helpful in identifying individuals at high risk of coronary involvement. Although the prevalence of low ABI in patients with IHD is 4.6% that is very low but is highly specific (91%). In patients with ischemic heart disease low ABI suggests the involvement of multivessel disease. Direct association between ABI and significant Coronary Artery Disease noted.