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The importance of instability and visit-to-visit variability of blood pressure
Giuseppe Schillaci1, Giacomo Pucci
1Internal Medicine, Angiology and Arteriosclerosis Disease, University of Perugia Medical School, Hospital Santa Maria della Misericordia, piazzale Menghini, 1 IT-06129 Perugia, Italy. skill@unipg.it
Insights
Visit-to-visit blood pressure variability, often ignored, independently predicts future cardiovascular events in hypertensive and post-stroke patients. Even in nonhypertensives, blood pressure fluctuations signal increased health risks.
Area of Science:
- Cardiology
- Neurology
- Hypertension Research
Background:
- Visit-to-visit blood pressure variability (BPV) is typically considered noise, confounding the association between long-term average blood pressure and disease.
- This study investigates the prognostic significance of BPV in various patient populations.
Discussion:
- BPV is an independent predictor of cardiovascular events in hypertensive patients.
- BPV also predicts adverse outcomes in individuals who have survived transient cerebral ischemia.
- Episodic blood pressure elevations in nonhypertensive individuals may indicate similar prognostic risks.
Key Insights:
- Visit-to-visit blood pressure variability is a significant, independent predictor of cardiovascular events.
- This finding applies to both hypertensive patients and survivors of transient ischemic attacks.
- Elevated BPV in nonhypertensive individuals also warrants attention for cardiovascular risk.
Outlook:
- Further research is needed to confirm if different antihypertensive drug classes differentially impact BPV.
- Investigating the clinical implications of BPV in nonhypertensive populations is crucial.
- Understanding and potentially managing BPV could offer new strategies for cardiovascular disease prevention.
Abstract:
Spontaneous fluctuations of blood pressure from visit to visit have usually been disregarded as a trivial factor that confounds the 'true' associations of an individual's long-term average blood pressure with disease. The paper under evaluation shows that visit-to-visit blood pressure variability is an independent predictor of future cardiovascular events in hypertensive patients and in subjects surviving a transient cerebral ischemia. Episodic elevations of blood pressure in nonhypertensive subjects seem to carry similar adverse prognostic significance. There is some evidence that different blood pressure-lowering drug classes may differ in their effects on visit-to-visit blood pressure variability, but these findings need to be confirmed in further studies.
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