BACKGROUND: Whether visit-to-visit systolic blood pressure (SBP) variability can predict major adverse cardiovascular events (MACE) in patients with chronic kidney disease is unclear. METHODS AND RESULTS: We investigated the relationship between SDs of visit-to-visit SBP variability during the first year of enrollment and MACE among 1575 participants from KNOW-CKD (Korean Cohort Study for Outcome in Patients With Chronic Kidney Disease). Participants were categorized into 3 groups according to tertiles of visit-to-visit SBP variability (SD). The study end point was MACE, defined as a composite of nonfatal myocardial infarction, unstable angina, revascularization, nonfatal stroke, hospitalization for heart failure, or cardiac death. During 6748 patient-years of follow-up (median, 4.2 years), MACE occurred in 64 participants (4.1%). Compared with the lowest tertile of visit-to-visit SBP variability (SD), the hazard ratios (HRs) for the middle and the highest tertile were 1.64 (95% CI, 0.80– 3.36) and 2.23 (95% CI, 1.12– 4.44), respectively, in a multivariable cause-specific hazard model. In addition, the HR associated with each 5-mm Hg increase in visit-to-visit SBP variability (SD) was 1.21 (95% CI, 1.01–1.45). This association was consistent in sensitivity analyses with 2 additional definitions of SBP variability determined by the coefficient of variation and variation independent of the mean. The corresponding HRs for the middle and highest tertiles were 2.11 (95% CI, 1.03– 4.35) and 2.28 (95% CI, 1.12– 4.63), respectively, in the analysis with the coefficient of variation and 1.76 (95% CI, 0.87– 3.57) and 2.04 (95% CI, 1.03– 4.03), respectively, with the variation independent of the mean. CONCLUSIONS: Higher visit-to-visit SBP variability is associated with an increased risk of MACE in patients with chronic kidney disease. REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifier: NCT01630486.
|Journal||Journal of the American Heart Association|
|Publication status||Published - 2022 Jun 1|
Bibliographical noteFunding Information:
This work was supported by the Research Program funded by the Korea Centers for Disease Control and Prevention (2011E3300300, 2012E3301100, 2013E3301600, 2013E3301601, 2013E3301602, 2016E3300200, 2016E-3300201, 2016E3300202, 2019E320100, 2019E320101, and 2019E320102).
© 2022 The Authors.
All Science Journal Classification (ASJC) codes
- Cardiology and Cardiovascular Medicine