Home Monitoring of Blood Pressure: Short-Term Changes During Serial Measurements for 56398 Subjects

Area of Science:

• Cardiology
• Biomedical Engineering
• Public Health

Background:

• Hypertension is a leading global cause of premature death and morbidity.
• Lowering blood pressure (BP) offers significant clinical benefits, reducing risks of stroke and ischemic heart disease.
• Accurate, continuous home BP monitoring is crucial but lacks extensive study on short-term BP trajectories.

Purpose of the Study:

• To analyze a large dataset of home BP measurements to understand BP trajectories over several minutes.
• To develop techniques for analyzing uncontrolled home BP data.
• To assess the clinical relevance of BP fluctuations in the home setting.

Main Methods:

• Analysis of over 16 million home BP measurements from commercial devices.
• Development of novel analytical techniques for uncontrolled data.
• Statistical modeling of BP changes and inter-subject variability over time.

Main Results:

• BP significantly decreases within 10 minutes (4.1 mmHg diastolic, 6.6 mmHg systolic) and continues to drop for ~25 minutes.
• Over 50% of measurements in the hypertension range may be misclassified due to these fluctuations.
• Significant inter-subject variability exists in the expected BP decrease.

Conclusions:

• Serial home BP measurements show a significant decrease over minutes, impacting hypertension classification.
• Current home monitoring practices may need adjustment to account for these BP dynamics.
• Findings support the need for further clinical studies on participant-monitored BP.