• Pak J Med Sci · Jul 2019

    Comparison of ankle-brachial index (ABI) measured by an automated oscillometric apparatus with that by standard hand-held doppler in patients with Type-2 diabetes.

    • Shair Zaman Khan, Awn-Bin-ZafarDr. Awn Bin Zafar, MCPS, M.D. Assistant Professor, Department of Medicine (BMU), Consultant Physician (BIDE) Baqai Institute of Diabetology and Endocrinology (BIDE), Baqai Medical University (BMU), Karachi, Pakistan., Nazish Waris, Zahid Miyan, Muhammad Saif Ulhaque, and Asher Fawwad.
    • Dr. Shair Zaman Khan, FCPS, Endocrine Fellow (BIDE). Baqai Institute of Diabetology and Endocrinology (BIDE), Baqai Medical University (BMU), Karachi, Pakistan.
    • Pak J Med Sci. 2019 Jul 1; 35 (4): 1167-1172.

    ObjectiveTo compare the difference between an automated oscillometric ABI measurement as compared to standard hand-held doppler ABI in patients with Type-2 diabetes.MethodsThis prospective study was conducted at foot clinic of Baqai Institute of Diabetology and Endocrinology (BIDE), Baqai Medical University (BMU), a tertiary care unit, Karachi-Pakistan. The duration of study was February 2018 to March 2018. Patients with Type-2 diabetes attending the outpatient department (OPD) of foot clinic, irrespective of their symptoms were included. Baseline demographic, anthropometric measurements and biochemical parameters were recorded. The ABI was calculated with both devices by an automated oscillometric machine and standard hand-held doppler with the same investigator.ResultsTotal of 93 patients with Type-2 diabetes, 18 (19.4%) females and 75(80.6%) males were recruited. Mean age was 54.67±9.59 years and mean systolic/diastolic blood pressure was 131.38±20.2/ 80.36±10.23mmHg. Most of the patients had poor glycemic control at presentation with a mean HbA1c of 9.56±2.44%. Mean standard handheld doppler ABI and automated oscillometric ABI was 1.28±1.08 and 1.07±0.23 for right foot (mean difference = 0.21; P= 0.075), and 1.14±0.45 and 1.1±0.25 for left foot (mean difference =0.04; P=0.434), respectively. Similarly, sensitivity and specificity between two modalities was observed 60% and 93.90% for right foot, meanwhile, 60% and 97.40% for left foot, respectively.ConclusionAn automated oscillometric method is comparable with standard handheld-doppler method. It is cost effective, convenient and less time consuming, can be widely used to measure ABI without special training.

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