The relationship between visit-to-visit blood pressure variability (BPV) and cardiovascular outcomes remains unclear. Our study assessed the prognostic implications of visit-to-visit BPV in patients after acute myocardial infarction (AMI). The present study enrolled 7,375 patients who underwent percutaneous coronary intervention for AMI and at least five measurements of blood pressure after hospital discharge. Visit-to-visit BPV was estimated as variability independent of mean. The primary endpoint was all-cause mortality. The secondary endpoints were major cardiovascular events (the composite of cardiovascular death, myocardial infarction, and ischemic stroke) and hospitalization for heart failure. During a median follow-up of 5.8 years, adjusted risks of all-cause mortality, major cardiovascular events, and hospitalization for heart failure continuously increased as systolic BPV and diastolic BPV increased. Patients in the highest quartile of systolic BPV (versus lowest) had increased risk of all-cause mortality (adjusted hazard ratio (aHR) 1.51 [95% confidence interval (CI) 1.23–1.85]), major cardiovascular events (aHR 1.31 [95% CI 1.1–1.55]), and hospitalization for heart failure (aHR 2.15 [95% CI 1.49–3.1]). Patients in the highest quartile of diastolic BPV was also associated with all-cause mortality (aHR 1.39 [95% CI 1.14–1.7]), major cardiovascular events (aHR 1.29 [95% CI 1.08–1.53]), and hospitalization for heart failure (aHR 2.01[95% CI 1.4–2.87]). Both systolic and diastolic BPV improved the predictive ability of the GRACE (Global Registry of Acute Coronary Events) risk score for both all-cause mortality and major cardiovascular events. Higher visit-to-visit BPV was associated with increased risks of mortality and cardiovascular events in patients after AMI.
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The authors thank Jinseob Kim, MD, MPH, and Misun Park, MS, for their excellent statistical support and analyses. The authors also thank the clinical research coordinators and members of the cardiac catheterization laboratories at the participating centers.
The authors declare no competing interests.
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Choo, E.H., Mok, JS., Chung, W.B. et al. Visit-to-visit blood pressure variability and mortality and cardiovascular outcomes after acute myocardial infarction. J Hum Hypertens (2021). https://doi.org/10.1038/s41371-021-00594-5