Continuous Monitoring of Blood Pressure Using a Wrist-Worn Cuffless Device

Gabriel Sayer, Greta Piper, Esther Vorovich, Jayant Raikhelkar, Gene H. Kim, Daniel Rodgers, Daichi Shimbo, Nir Uriel

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Background: Measuring an accurate blood pressure (BP) in ambulatory patients is critical for therapeutic decisions. An accurate noninvasive device that measures BP continuously could provide a more comprehensive assessment of BP. The aim of this study was to determine whether the LiveOne device, a cuffless wristband that provides continuous BP measurements, is accurate in comparison to an invasive arterial line (A-line). Methods: We enrolled hospitalized patients and healthy volunteers in this multicenter study. All patients had an invasive A-line. Waveforms were simultaneously downloaded from the A-line and LiveOne device. The primary outcome was the correlation between the LiveOne device and the A-line for systolic BP (SBP) and diastolic BP (DBP). Results: Thirty-four patients with 233 measurement periods were included. Mean age was 60.7 ± 15.2 years, and 15 (44%) were female. The correlation for SBP was 0.91 and for DBP was 0.85. The mean band error was 0.0 ± 6.9 mm Hg for SBP and 1.2 ± 5.7 mm Hg for DBP. The mean absolute error was 8.2 ± 5.8 mm Hg for SBP and 6.4 ± 3.9 mm Hg for DBP. For SBP, 98% of LiveOne measurements were within 15 mm Hg and for DBP, 92% of LiveOne measurements were within 10 mm Hg. Conclusions: The LiveOne device provides continuous, noninvasive BP measurements that are accurate in comparison to A-line measurements. The portability and unobtrusive nature of this device and the ability to provide continuous BP measurements may offer advantages over currently available BP monitors.

Original languageEnglish (US)
Pages (from-to)407-413
Number of pages7
JournalAmerican Journal of Hypertension
Volume35
Issue number5
DOIs
StatePublished - May 1 2022

Keywords

  • blood pressure
  • blood pressure measurement/monitoring
  • cardiovascular disease
  • hypertension
  • remote monitoring

ASJC Scopus subject areas

  • Internal Medicine

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