Right Ventricular Hypertrophy After Atrial Switch and Cardiovascular Magnetic Resonance (CMR) Findings

Right Ventricular Hypertrophy After Atrial Switch Operation and Its Role in a Systemic RV: Normal Adaptation Process or Risk Factor? A Cardiovascular Magnetic Resonance Study

Systemic RV hypertrophy and impaired systolic function occur after atrial switch (AS) in d-transposition of the great arteries (d-TGA). Echocardiography has limitation in the assessment of the right ventricle (RV).

In this study the investigators sought to evaluate systemic RV myocardial mass and function after AS for d-TGA and to analyze the role of excessive hypertrophy for ventricular function under special consideration of the interventricular septal (IVS) movement.

Inclusion Criteria:

• Eligibility criteria were an AS operation in childhood for correction of d-TGA and the absence of associated hemodynamically significant heart defects.

Exclusion Criteria:

• Exclusion criteria were usual CMR contraindications such as ferromagnetic metallic implants.