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Background: Peripheral arterial disease (PAD) generally occurs as a result of progressive narrowing of arteries within the lower extremities and is a manifestation of systemic atherosclerosis. We define PAD with the aid of using the dimension ankle-brachial index (ABI) which is the most accurate tool and determination of ABI is a simple non-invasive procedure that can be easily performed on an outpatient basis. The cut-off point for diagnosis of peripheral arterial disease (PAD) & cardiovascular risk is ABI ≤ 0.90 or ≥ 1.30. Materials and Methods: This cross sectional study involves 47 newly diagnosed hypertensive patients of age between 30-50 years. Anthropometric measurements and ABI of all the patients were done in the research lab of the Physiology department. The ABI measurements were performed by using an automated oscillometric device (Watch BP Office, Microlife, Widnau, Switzerland). In this procedure, the blood pressure was measured simultaneously on both arms followed by both ankles in the supine position. Results: In our study out of 47 patients, 31 (66.0%) were male and 16 (34.0%) were female of mean age 43.79±6.82 years. The prevalence of deranged ABI in the present study was 10.64% according to Right ABI, while it was 6.38% according to Left ABI. A significant correlation was found for ABI in the Right ankle with SBP in the right upper limb (P=0.013) & both right and left lower limb (P˂0.001 & P=0.028 respectively), while a significant correlation was also found for Left ABI with SBP in both right and left upper limbs (P=0.007 & P=0.003 respectively). We also found that 29.8% of the subjects have a low normal value of ABI (i.e., between 0.9-1.1), this is significant, even in asymptomatic patients, for Peripheral Arterial Disease (PAD). Conclusion: So we can conclude that in newly diagnosed hypertensive patients, ABI are valuable tools for early detection of cardiovascular damage. By identifying subclinical changes before symptoms arise, healthcare providers can implement early, targeted interventions to manage hypertension more effectively and reduce the risk of long-term complications. [ABSTRACT FROM AUTHOR]

Background: Peripheral arterial disease (PAD) remains underdiagnosed, partly because of the limitations of the Doppler ankle-brachial index (ABI) with regards to equipment, training, and time constraints. Aims: To compare the accuracy and validity of automated oscillometric ABI measurement in detecting PAD in primary care settings against a gold standard Doppler device. Settings and Design: A cross-sectional observational study was conducted at the physiology department, Dr. Ram Manohar Lohia Institute of Medical Sciences (DrRMLIMS), Lucknow. Methods and Material: A total of 200 male building construction workers of all types of age groups between 20 and 40 years were recruited. The ABI measurement was performed using the Watch BP Office and hand-held HI.dop, BT-200 Vascular Doppler device. Statistical Analysis Used: The Bland-Altman plot and receiver operator characteristics (ROC) curve were determined to analyze the agreement between the two methods. For the reliability of the test, Pearson's correlation with linear regression was done and the intraclass correlation (ICC) coefficient was calculated. Results: The mean ABI (Osc) and ABI (Dop) were 1.13 ± 0.09 and 1.06 ± 0.08, respectively. The ABI (Dop) and ABI (Osc) methods were highly correlated Pearson's correlation coefficient of 0.96 with 95% confidence interval (CI) ranges between 0.985 and 1.066 (P < 0.001). On linear regression analysis, the ABI (Dop) predicted ABI (Osc) 92.6% correctly. The paired mean difference between the two measuring devices was 0.07 (95% CI = −0.03 to −0.12). At 0.90 cut-off value of diagnosing PAD, the sensitivity is 50%, specificity 100%, positive predictive value 100%, and negative predictive value 97% by an oscillometric automated device. Conclusion: Our finding suggested that ABI measurement by the automated oscillometric device is reliable, free of examiner bias, and less time-consuming. [ABSTRACT FROM AUTHOR]