Article

Blood pressure measurement in obese patients: non-invasive proximal forearm versus direct intra-arterial measurements

Published in: Southern African Journal of Anaesthesia and Analgesia
Volume 24 , issue 3 , 2018 , pages: 70–74

DOI: 10.1080/22201181.2018.1461323

Author(s): A Verkhovsky Department of Anesthesiology and Critical Care, South Africa , M Smit Department of Anesthesiology and Critical Care, South Africa , A Levin Department of Anesthesiology and Critical Care, South Africa , JF Coetzee Department of Anesthesiology and Critical Care, South Africa

Keywords: Blood pressure monitoring , comparative study , forearm , intra-arterial , obese

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Abstract

Background: In obesity, accurate perioperative blood pressure measurement using upper arm, non-invasive blood pressure (NIBP) is technically challenging. Proximal forearm NIBP may be an acceptable substitute. Mean arterial blood pressures (MAP) estimated by proximal forearm NIBP were compared with direct intra-arterial measurements. It was hypothesised that the measurement techniques would be interchangeable if between-technique MAP differed ≤ 20% and MAP ratios were < 1.2 and > 0.8.

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