Orthostatic Blood Pressure Variability in Clinical Populations
Summary
Orthostatic blood pressure variability refers to the patterns of blood pressure change that occur in response to a postural shift from supine to standing. This variability arises from the interplay between baroreflex sensitivity, vascular compliance, autonomic nervous system function and cardiac output. In clinical populations—encompassing older adults, individuals with hypertension, neurodegenerative disorders and those on polypharmacy regimens—exaggerated or blunted orthostatic changes can signal impaired haemodynamic regulation. Abnormal patterns include initial orthostatic hypotension, delayed blood pressure recovery and sustained hypotensive declines, each carrying distinct risks such as falls, syncope, cognitive impairment and increased mortality. Technological advances in noninvasive beat-to-beat monitoring have uncovered the multiscale complexity of these responses, linking reduced variability to stiffer arteries, endothelial dysfunction and diminished adaptive capacity. Amid a global rise in ageing demographics and chronic disease prevalence, understanding orthostatic blood pressure variability is essential for refined diagnosis, risk stratification and personalised management strategies that may encompass lifestyle interventions, pharmacological review and tailored non-pharmacological countermeasures.
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Orthostatic Blood Pressure Variability in Clinical Populations publication trend
The graph below shows the total number of articles in orthostatic blood pressure variability in clinical populations across all publications each year (not limited to Nature Index journals).
Technical terms
Orthostatic hypotension: A sustained drop in systolic and/or diastolic blood pressure upon standing, typically ≥20 mmHg systolic or ≥10 mmHg diastolic within three minutes.
Orthostatic blood pressure variability: The magnitude and temporal pattern of blood pressure change during and after a postural shift.
Beat-to-beat monitoring: Continuous, high-resolution measurement of blood pressure with each heartbeat, often via noninvasive finger cuff devices.
Multiscale entropy: A method of quantifying complexity within physiological time series, reflecting interactions across multiple regulatory mechanisms.
References
- The physiologic complexity of beat‐to‐beat blood pressure is associated with age‐related alterations in blood pressure regulation. Aging Cell (2023).
- Noninvasive beat‐to‐beat finger arterial pressure monitoring during orthostasis: a comprehensive review of normal and abnormal responses at different ages. Journal of Internal Medicine (2017).
- Drug-induced orthostatic hypotension: A systematic review and meta-analysis of randomised controlled trials. PLOS Medicine (2021).
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