Low Birth Weight Associations with Cardiac Structure and Function in Adults After Arterial Switch for Transposition of the Great Arteries

Overview

Journal Int J Cardiol Congenit Heart Dis

Date 2024 Dec 23

PMID 39713235

Authors

Art Schuermans

Beatrice Santens

Jef Van den Eynde

Xander Jacquemyn

Roel L F Van Der Palen

Michael C Honigberg

Alexander Van De Bruaene

Piet Claus

Jan Bogaert

Werner Budts

Affiliations

Soon will be listed here.

Abstract

Background And Aims: The objective of this study was to assess the associations of birth weight with cardiac structure and function in adults with dextro-transposition of the great arteries (D-TGA) who underwent the arterial switch operation (ASO).

Methods And Results: Thirty-nine ASO patients (age 24.4 ± 3.3 years) were included during routine clinical follow-up from July 2019 to December 2021. All patients underwent cardiopulmonary exercise testing and cardiac magnetic resonance imaging at rest and during exercise. Early-life characteristics, including birth weight, were extracted from electronic medical health records. Linear regression analysis showed that lower birth weight was associated with smaller left ventricular (LV) and right ventricular (RV) end-diastolic volume index (LV: -14.5 mL/m [95 % confidence interval, CI: -26.5 to -2.5] per 1-kg decrease in birth weight,  = 0.04; RV: -11.2 mL/m [-20.7 to -1.7] per 1-kg decrease in birth weight, = 0.03). Lower birth weight was associated with greater LV and RV ejection fraction at rest (LV: +8.5 % [+4.4 to +12.5] per 1-kg decrease in birth weight, < 0.001); RV: +8.1 % [+2.8 to +13.4] per 1-kg decrease in birth weight,  = 0.005). Furthermore, lower birth weight was associated with an attenuated increase in LV stroke volume index from rest to peak exercise (-5.2 mL/m [-9.3 to -1.2] per 1-kg decrease in birth weight,  = 0.02).

Conclusions: Birth weight may be a novel risk factor for adverse cardiac remodeling in adult ASO patients. Further research is needed to delineate the mechanisms underlying the associations between birth weight and cardiac remodeling ASO patients as well as the broader adult CHD population.

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