Association of Central Arterial Stiffness with Atrial Myopathy: the Atherosclerosis Risk in Communities (ARIC) Study

Overview

Journal Hypertens Res

Specialty Cardiology & Vascular Diseases

Date 2024 Aug 8

PMID 39117948

Authors

Lorraine A Mascarenhas

Yuekai Ji

Wendy Wang

Riccardo M Inciardi

Romil R Parikh

Anne A Eaton

Susan Cheng

Alvaro Alonso

Kunihiro Matsushita

Amil M Shah

Scott D Solomon

Michelle L Meyer

Lin Yee Chen

Michael J Zhang

Affiliations

Soon will be listed here.

Abstract

Atrial myopathy-defined as abnormal left atrial (LA) size and function-is associated with an increased risk of atrial fibrillation, heart failure, and dementia. Central arterial stiffness is associated with increased atrial afterload and fibrosis and may be a risk factor for atrial myopathy. We examined the association of carotid-femoral pulse wave velocity (cfPWV) with LA function and assessed potential causal relationships. We included 2825 Atherosclerosis Risk in Communities (ARIC) study participants from Visit 5 (2011-2013). cfPWV was related to echocardiographic LA function continuously per 1-SD and categorically in quartiles. Mendelian randomization (MR) analysis was performed using U.K. Biobank-derived genetic variants associated with arterial stiffness index and cardiac magnetic resonance measures of LA function. When analyzed per SD increment (297.6 cm/s), higher cfPWV was significantly associated with lower LA reservoir and conduit strain (β = -0.53%, 95% CI [-0.81, -0.25] and β = -0.46%, 95% CI [-0.68, -0.25], respectively) after adjusting for demographics, clinical characteristics, systolic blood pressure, and left ventricular (LV) morphology and function. In MR analyses there was a non-significant inverse association of arterial stiffness index with LA total, passive, and active emptying fractions. Higher cfPWV is associated with lower LA reservoir and conduit strain, independent of systolic blood pressure and LV morphology and function. No evidence for a causal relationship between arterial stiffness index and alterations in LA function was found. Future studies should examine the prospective association of central arterial stiffness with LA function alterations.

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