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Tomitani N, Kanegae H, Suzuki Y, et al. Stress-Induced Blood Pressure Elevation Self-Measured by a Wearable Watch-Type Device. Am J Hypertens. 2021;34(4):377-382doi: 10.1093/ajh/hpaa139.
Tomitani, N., Kanegae, H., Suzuki, Y., Kuwabara, M., & Kario, K. (2021). Stress-Induced Blood Pressure Elevation Self-Measured by a Wearable Watch-Type Device. American journal of hypertension, 34(4), 377-382. https://doi.org/10.1093/ajh/hpaa139
Tomitani, Naoko, et al. "Stress-Induced Blood Pressure Elevation Self-Measured by a Wearable Watch-Type Device." American journal of hypertension vol. 34,4 (2021): 377-382. doi: https://doi.org/10.1093/ajh/hpaa139
Tomitani N, Kanegae H, Suzuki Y, Kuwabara M, Kario K. Stress-Induced Blood Pressure Elevation Self-Measured by a Wearable Watch-Type Device. Am J Hypertens. 2021 Apr 20;34(4):377-382. doi: 10.1093/ajh/hpaa139. PMID: 32852527; PMCID: PMC8057129.
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Am J Hypertens. 2021 Apr 20;34(4):377-382. doi: 10.1093/ajh/hpaa139.

Stress-Induced Blood Pressure Elevation Self-Measured by a Wearable Watch-Type Device.

American journal of hypertension

Naoko Tomitani, Hiroshi Kanegae, Yuka Suzuki, Mitsuo Kuwabara, Kazuomi Kario

Affiliations

  1. Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
  2. Genki Plaza Medical Center for Health Care, Tokyo, Japan.
  3. Omron Healthcare Co., Ltd., Kyoto, Japan.

PMID: 32852527 PMCID: PMC8057129 DOI: 10.1093/ajh/hpaa139

Abstract

BACKGROUND: Psychological stress contributes to blood pressure (BP) variability, which is a significant and independent risk factor for cardiovascular events. We compared the effectiveness of a recently developed wearable watch-type BP monitoring (WBPM) device and an ambulatory BP monitoring (ABPM) device for detecting ambulatory stress-induced BP elevation in 50 outpatients with 1 or more cardiovascular risk factors.

METHODS: The WBPM and ABPM were both worn on the subject's nondominant arm. ABPM was measured automatically at 30-minute intervals, and each ABPM measurement was followed by a self-measured WBPM measurement. We also collected self-reported information about situational conditions, including the emotional state of subjects at the time of each BP measurement. We analyzed 642 paired BP readings for which the self-reported emotional state in the corresponding diary entry was happy, calm, anxious, or tense.

RESULTS: In a mixed-effect analysis, there were significant differences between the BP values measured during negative (anxious, tense) and positive (happy, calm) emotions in both the WBPM (systolic BP [SBP]: 9.3 ± 2.1 mm Hg, P < 0.001; diastolic BP [DBP]: 8.4 ± 1.4 mm Hg, P < 0.001) and ABPM (SBP: 10.7 ± 2.1 mm Hg, P < 0.001; DBP: 5.6 ± 1.4 mm Hg, P < 0.001). The absolute BP levels induced by emotional stress self-measured by the WBPM were similar to those automeasured by the ABPM (SBP, WBPM: 141.1 ± 2.7 mm Hg; ABPM: 140.3 ± 2.7 mm Hg; P = 0.724). The subject's location at the BP measurement was also significantly associated with BP elevation.

CONCLUSIONS: The self-measurement by the WBPM could detect BP variability induced by multiple factors, including emotional stress, under ambulatory conditions as accurately as ABPM.

© The Author(s) 2020. Published by Oxford University Press on behalf of American Journal of Hypertension, Ltd.

Keywords: ambulatory blood pressure; blood pressure; blood pressure variability; emotional stress; hypertension; wearable watch-type wrist blood pressure monitor

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