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24.02.2020 | Original Article | Ausgabe 4/2020

Pediatric Cardiology 4/2020

Right Ventricular Strain Impairment in Adults and Adolescents with Repaired Aortic Coarctation

Zeitschrift:
Pediatric Cardiology > Ausgabe 4/2020
Autoren:
Fabien Labombarda, Laurine Verdier, Pascale Maragnes, Paul Milliez, Farzin Beygui
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Abstract

This study examines the function of the right ventricle (RV) using two-dimensional (2D) strain analysis after aortic coarctation (CoA) repair, as well as relationships between potential RV strain abnormalities and patient characteristics. The study examined 39 patients (61% male, age 32 ± 16 years) with CoA repair (33 post end-to-end anastomosis/sub-clavian flap, 6 post stenting/bypass/Teflon patch) and 42 controls. The structure and function of the left ventricle (LV), left atrium (LA), and RV were assessed using 2D standard echocardiography, tissue Doppler imaging, and 2D strain imaging. The characteristics examined included global RV longitudinal strain (RV-GLS), global LV longitudinal strain (LV-GLS), and LA longitudinal strain (LA strain). RV dysfunction was defined by RV-GLS lower than the mean minus 2 standard deviations (SDs) of the control group value. LV mass and mitral E/Ea were significantly higher in the CoA group. Septal Ea, LV-GLS, and LA strain were significantly lower in the CoA group. RV dysfunction (RV-GLS >  − 16%) was present in 10 (25.6%) CoA patients. RV-GLS was correlated with lateral Ea, LV-GLS, and LA strain (r =  − 0.35, p = 0.02; r =  − 0.54, p < 0.001; and r =  − 0.44, p = 0.005, respectively). Patients who had a stenting/bypass/Teflon patch as the first initial repair exhibited significantly lower RV-GLS. RV systolic strain abnormalities may occur in patients late after CoA repair. RV strain was correlated with parameters of LV dysfunction. Further large-scale studies are required to confirm these findings and to determine the mechanisms and prognostic implications of RV strain in such patients.

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