Comparison of oscillometric and intra-arterial blood pressure and pulse measurement

Abstract

Non-invaswe oscillometric blood pressure and pulse measured by an Omron HEM-703CP monitor were compared with arterial values obtained from direct measurements of the radial artery. An excellent correlation and agreement was found between the two methods (systolic r=0.99; diastolic r=0.97; pulse r=0.99), although there was some variability among individual subjects. The range of difference between them was 0 to l. mmHg for systolic and—6 to + 5mmHg for diastolic pressures. When tested on the bench using the Metron QA-1280 non-invasive blood pressure analyser the HEM-703CP monitor rarely exhibited errors exceeding 2–3 mmHg over a measurement range of 50–200 mmHg.