Fidelity to and utility of a home blood pressure self-monitoring regime in people with pre-hypertension: results from the REVERSE study.

Introduction: Around 40% of adults have pre-hypertension (120-139/80-89mmHg) increasing their risk of developing hypertension and associated cardiovascular conditions. Guidance on pre-hypertension management focuses on improving lifestyle. Self-monitoring may improve awareness and understanding of blood pressure (BP) for people with pre-hypertension, allowing them to modify their lifestyle risks.

Aim: To determine the fidelity to and utility of a home BP self-monitoring regime in people with pre-hypertension.

Method: This sub-study is part of a larger prospective, non-randomised feasibility study. Individuals with pre-hypertension were identified via GP records and pharmacy NHS Health Checks in Northwest England. Participants received training for home BP self-monitoring. They were asked to complete two readings (leaving a 5-minute interval) on the first three days of the month for six months, colour-code their readings and take action using a simple algorithm, then send them to the research team within 7 days.

Results: Eighty participants (aged 40-79, mean=59) enrolled. The majority were female (n=45, 56%), White British (n=79, 99%), and had not previously monitored their BP (n=55, 69%). Seventy-five (94%) participants completed the training. Sixty-one (81%) received online training and 14 (19%) opted for a face-to-face session. Sixty-one (81%) completed all six months of readings, 51 (68%) also returned them on time. All in-person training participants completed all six months of readings on time. Reasons for non-compliance to the protocol included battery issues, forgetting, and struggling to find a consistent time for readings.

Conclusion: Home BP self-monitoring can be feasible and easily implementable for people with pre-hypertension - however, some barriers were identified.