Title: Linear multivariate equations for tourniquetless monitoring of systolic and mean arterial blood pressure

Authors: C.D. Kapse; Vineet Sinha; R.K. Jain; V.B. Shelar; Bhagyashree Sarade; A.D. Kamble; G.D. Jindal

Addresses: Department of Instrumentation Engineering, Watumull Institute of Electronics Engineering and Computer Technology, 47, R.G. Thadani Marg, Worli Seaface, Mumbai 400 018, India ' Bio-Medical Section, Electronics Division, Modular Laboratories, Bhabha Atomic Research Centre, Mumbai 400 085, India ' Electronics Division, Modular Laboratories, Bhabha Atomic Research Centre, Mumbai 400 085, India ' Asha nursing home and Shelar Clinic First Floor, Neelkanth Sadan, Sector-10, Khanda Coloney, New Panvel Navi Mumbai 410 206, India ' Electronics Division, Modular Laboratories, Bhabha Atomic Research Centre, Mumbai 400 085, India ' Bio-Medical Section, Electronics Division, Modular Laboratories, Bhabha Atomic Research Centre, Mumbai 400 085, India ' Bio-Medical Section, Electronics Division, Modular Laboratories, Bhabha Atomic Research Centre, Mumbai 400 085, India

Abstract: Linear multivariate equations have been developed for tourniquet-less non-invasive monitoring of blood pressure in Indian subjects aged 10-80 years, including subjects under antihypertensive treatment. Averaged time intervals over four successive beats in photoplethysmogram (PPG), impedance plethysmogram (IPG) and electrocardiogram (ECG) of 137 subjects (94 males and 43 females) have been used to develop predicting equations for Systolic Blood Pressure (SBP) and Mean Arterial Pressure (MAP) using oscillometric reference with correlation coefficient of 0.88 and 0.797; and root mean square error as 6.98 and 7.09 respectively. Validity of developed equations was further tested on entirely different group of 136 subjects (84 males and 52 females) with correlation coefficient of 0.826 and 0.731 respectively. The results of this study suggest use of developed equations for tourniquetless continuous beat-to-beat BP monitoring.

Keywords: linear multivariate equations; tourniquetless monitoring; arterial blood pressure; plethysmographic intervals; India; blood pressure monitoring; photoplethysmograms; PPG; impedance plethysmograms; IPG; electrocardiograms; ECG.

DOI: 10.1504/IJBET.2012.049363

International Journal of Biomedical Engineering and Technology, 2012 Vol.10 No.2, pp.118 - 133

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 01 Oct 2012 *

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