Accepted for/Published in: Journal of Medical Internet Research
Date Submitted: May 31, 2018
Open Peer Review Period: May 31, 2018 - Jul 26, 2018
Date Accepted: Apr 29, 2019
(closed for review but you can still tweet)
Usability of a New Cuffless Device for Ambulatory Blood Pressure Measurement in Hypertension
ABSTRACT
Background:
Frequent home blood pressure (BP) measurements result in a better estimation of true BP. However, traditional cuff-based BP measuring is troublesome for patients.
Objective:
To evaluate the use and efficacy of a new cuffless device (Checkme) for ambulatory systolic blood pressure (SBP) measurement.
Methods:
A mixed-method study in hypertensive patients. Reliability of Checkme SBPs was analyzed quantitatively by intra-user reproducibility and comparability to a classic home BP monitor. Correct use by the patients was checked with video. Patients reported experience with qualitative semi-structured interviews and user-friendliness was assessed using a validated questionnaire.
Results:
1020 Checkme SBP measurements were performed in 11 hypertensive patients. Duplicate SBPs showed a high intra-user correlation (R=0.86, p<0.01). SBP of the Checkme did not correlate well with those of the different home monitors being used (R=0.47, p<0.01). However, the mean SBP’s of the Checkme and of the home monitors over 3 weeks follow-up were highly correlated (R=0.75, p<0.01). 36.4% (n=4) of the participants performed the Checkme measurements without any mistakes. The mean SUS score was 86.4 (SD=8.3). The most important facilitator was the ease of use of the Checkme. Most important barriers included the absence of diastolic BP and the incidental difficulties in obtaining an SBP result.
Conclusions:
Given the good intra-user reproducibility, user-friendliness and patient experience, which all facilitate patients to perform frequent measurements, cuffless BP monitoring may change the way patients are measuring their home BP in the context of ambulant hypertension management. Clinical Trial: NA
Citation
Per the author's request the PDF is not available.
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