Prognostic Value of Aortic Stiffness Using Cardiovascular Magnetic Resonance in The Elderly with Known or Suspected Coronary Artery Disease

Overview

Journal Arq Bras Cardiol

Specialty Cardiology & Vascular Diseases

Date 2022 May 25

PMID 35613197

Authors

Yodying Kaolawanich

Thananya Boonyasirinant

Affiliations

Soon will be listed here.

Abstract

Background: Aortic stiffness is established as a marker of cardiovascular disease. Cardiovascular magnetic resonance (CMR) provides a comprehensive assessment of aortic stiffness and myocardial ischemia in a single examination. However, prognostic data concerning aortic stiffness in elderly patients remain limited.

Objective: To determine the prognostic value of aortic stiffness using CMR-based pulse wave velocity (PWV) in elderly patients with known or suspected coronary artery disease (CAD).

Methods: This study enrolled consecutive patients aged >70 referred for adenosine stress perfusion CMR including PWV between 2010 and 2014. Patients were followed up for occurrence of major adverse cardiovascular events (MACE), including cardiac mortality, nonfatal myocardial infarction, hospitalization for heart failure, late revascularization (>180 days after CMR), and ischemic stroke. Univariable and multivariable analyses were performed to determine the predictors of MACE. A p-value of <0.05 is considered statistically significant.

Results: Mean PWV was 13.98±9.00 m/s. After a median follow-up period of 59.6 months in 263 patients (55% female, 77±5 years), 61 MACE occurred. Patients with elevated PWV (>13.98 m/s) had significantly higher rates of MACE (HR 1.75; 95% CI 1.05-2.94; p=0.03) than those with non-elevated PWV (<13.98 m/s). Multivariate analysis demonstrated diastolic blood pressure, left ventricular ejection fraction (LVEF), myocardial ischemia, and elevated PWV as independent predictors for MACE (p<0.05 for all). PWV provided an incremental prognostic value over clinical data, LVEF, and ischemia (increased global chi-square=7.25, p=0.01).

Conclusion: Aortic stiffness using CMR is a strong and independent predictor of cardiovascular events in elderly patients with known or suspected CAD.

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