1081-P: Blood Pressure Variability Is Associated with Risk of Heart Failure, Elevated NT-proBNP, and High-Sensitivity Troponin: Results from MESA

Abstract

The association between blood pressure variability (BPv) and heart failure (HF) is incompletely studied. This association, and its links with biomarkers of HF and cardiac injury, were examined in the community-based Multi-Ethnic Study of Atherosclerosis (MESA) . Resting seated BP was measured thrice; the average of the last two measures was used for analysis, and visit-to-visit BPv (coefficient of variation-CV) was assessed over 5 visits. Biomarkers of HF (N-terminal B-type natriuretic peptide: NT-proBNP) and cardiac injury (high-sensitivity troponin-T: hs-cTnT) , respectively, at exams 1, 3 and 5 were ascertained. With 9.4 years median follow-up in 6,785 individuals, 385 HF events occurred. In adjusted time-dependent models including CVD risk factors, BMI, BP medications, and cumulative mean BP, BPv (CV-SBP and CV-DBP) was associated with risk of clinical HF (e.g., CV-SBP HR=1.16, p=0.03) . Similar patterns were seen regardless of T2D status. The associations were stronger for HF with reduced ejection fraction (EF) vs. preserved EF. When excluding those with baseline NT-proBNP >450 pg/mL or hs-cTnT >14 ng/L, the association between BPv and HF became stronger. CV-SBP and CV-DBP were also associated with elevated exam 5 NT-proBNP (>450 pg/mL: OR=1.74, and OR = 1.32, p<0.001) . We saw a positive relationship between CV-SBP and exam 1 to exam 5 changes in NT-proBNP (p=0.001) and hs-cTnT (p<0.001) as well as elevated hs-cTnT (>14 ng/L; OR=1.18, p<0.001) . Our data strongly support an association between BPv and both clinical HF and elevated NT-proBNP, and the association was greater in those with reduced vs. preserved EF. The association between BPv and clinical HF was related to deleterious changes in subclinical markers of myocardial injury and heart failure. Disclosure D.S.Nuyujukian: None. J.Zhou: Research Support; Dexcom, Inc. J.Koska: None. C.Nwabuo: None. A.Bertoni: None. S.Shea: Research Support; National Heart, Lung, and Blood Institute. P.Reaven: Research Support; AstraZeneca, Dexcom, Inc. Funding NIH/NHLBI (F32HL156626) NIH/NHLBI (R21HL150374) NIH/NHLBI (R21HL150268) NIH/NHLBI (R01HL138969)