Evaluation of the ability of a commercially available cuffless wearable device to track blood pressure changes

Isabella Tan, Sonali R Gnanenthiran, Justine Chan, Konstantinos G Kyriakoulis, Markus P Schlaich, Anthony Rodgers, George S Stergiou, Aletta E Schutte

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


OBJECTIVES: Cuffless wearable blood pressure (BP) devices may allow detailed evaluation of BP for prolonged periods, but their ability to accurately track BP changes is uncertain. We investigated whether a commercially available cuffless wearable device tracks: 24-h systolic (SBP) and diastolic BP (DBP) compared to conventional ambulatory monitoring (ABPM); and antihypertensive medication-induced BP changes compared to cuff-based home BP monitoring (HBPM).

METHODS: We fitted 41 participants (32% females, 58 ± 14 years, 80% hypertensive) with a wrist-wearable cuffless BP device (Aktiia) continuously for 6-12 days. At the beginning and the end of this period, 24-h ABPM was performed. Three participants with hypertension (one female; 60 ± 8 years) wore the Aktiia device and performed HBPM continuously one week before and 2 weeks after antihypertensive medication uptitration.

RESULTS: Compared to ABPM, Aktiia reported higher average SBP for 24-h (difference 4.9 mmHg, 95% CI [1.9, 7.9]) and night-time (15.5[11.8, 19.1] mmHg; all P ≤ 0.01), but similar daytime (1.0 [-1.8, 3.8] mmHg; P = 0.48). Similarly, average cuffless DBP was higher for 24-h (4.2 [2.3, 6.0] mmHg) and night-time (11.8 [9.5, 14.1] mmHg; both P 
CONCLUSION: This cuffless wearable device did not accurately track night-time BP decline and results suggested it was unable to track medication-induced BP changes.

GRAPHICAL ABSTRACT: http://links.lww.com/HJH/C176.
Original languageEnglish
Pages (from-to)1003-1010
Number of pages8
JournalJournal of Hypertension
Issue number6
Publication statusPublished - 1 Jun 2023


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