Blood Pressure Variability in Cardiovascular Health
Summary
Blood pressure variability (BPV) refers to fluctuations in blood pressure measurements over time, encompassing beat-to-beat, day-to-day and visit-to-visit changes. While mean blood pressure remains central to cardiovascular risk assessment, evidence has accumulated that variability itself contributes independently to target-organ damage and adverse outcomes. Short-term fluctuations often reflect autonomic regulation, endothelial function and momentary stressors, whereas longer-term variability may signal inconsistent treatment adherence, lifestyle factors or progressive vascular stiffness. Mechanistically, exaggerated oscillations in pressure increase shear stress, promote microvascular injury and accelerate atherosclerotic processes. Advances in home and ambulatory monitoring have standardised metrics such as standard deviation, coefficient of variation and variability independent of the mean, facilitating incorporation of BPV into risk stratification. From primary prevention to post-stroke care, addressing both sustained hypertension and its dynamic characteristics supports more personalised therapeutic strategies, with global implications for treatment guidelines and community health programmes.
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Blood Pressure Variability in Cardiovascular Health publication trend
The graph below shows the total number of articles in blood pressure variability in cardiovascular health across all publications each year (not limited to Nature Index journals).
Technical terms
Blood pressure variability (BPV): Fluctuations in blood pressure over defined time intervals, from seconds to months.
Visit-to-visit variability: Changes in blood pressure measured at successive clinical appointments, reflecting long-term stability.
Coefficient of variation (CV): A dimensionless index of dispersion, calculated as the standard deviation divided by the mean blood pressure.
Ambulatory blood pressure monitoring (ABPM): Continuous measurement of blood pressure over 24 hours during normal daily activities.
References
- Legacy benefits of blood pressure treatment on cardiovascular events are primarily mediated by improved blood pressure variability: the ASCOT trial. European Heart Journal (2024).
- Metabolic syndrome parameters' variability and stroke incidence in hypertensive patients: evidence from a functional community cohort. Cardiovascular Diabetology (2024).
- Blood pressure variability and cardiovascular disease: systematic review and meta-analysis. The BMJ (2016).
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