Does the accuracy of the fingertip sphygmomanometer improve by measuring the outside temperature?

Kazuki Nakajima; Yoshinori Tabata; Kouichi Morio; Hideo Eda

doi:10.1117/12.2609274

2 March 2022 Does the accuracy of the fingertip sphygmomanometer improve by measuring the outside temperature?

Kazuki Nakajima, Yoshinori Tabata, Kouichi Morio, Hideo Eda

Proceedings Volume 11950, Optics and Biophotonics in Low-Resource Settings VIII; 1195006 (2022) https://doi.org/10.1117/12.2609274
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

Several types of the cuffless blood pressure (BP) devices have been developed to calculate BP values mainly from the heart rate (HR). But the cuffless devices suffer from low accuracy compared to the BP values directly measured using sphygmomanometer a with inflatable cuff. Since cuffless BP estimated by optical technology is affected not only by HR but also by vascular resistance, vascular resistance can cause inaccuracies. Vascular resistance is determined by the stiffness of the blood vessels and the air temperature. To examine how air temperature affects the fingertip BP, we prototyped a Fingertip BP device with a non-contact thermometer for measuring outside temperature. This presentation clarifies the findings during the trial production.

Conference Presentation

Citation Download Citation

Kazuki Nakajima, Yoshinori Tabata, Kouichi Morio, and Hideo Eda "Does the accuracy of the fingertip sphygmomanometer improve by measuring the outside temperature?", Proc. SPIE 11950, Optics and Biophotonics in Low-Resource Settings VIII, 1195006 (2 March 2022); https://doi.org/10.1117/12.2609274

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