Abstract
Transposition of the great arteries (TGA) is a common congenital cardiac malformation, in which many patients survive into adulthood. From the 1960s through much of the 1980s, the majority of those with D-TGA were repaired with an atrial switch procedure, in which the right ventricle (RV) remains the systemic ventricle. Congenitally corrected TGA patients often remain with a systemic RV. In these patients, heart failure risks result from residual sequelae of childhood repair, which often include tricuspid regurgitation, RV failure, and atrial and ventricular arrhythmias. Imaging techniques, including echocardiography, cardiac magnetic resonance imaging, multi-detector computed tomography, and radionuclide ventriculography focus on evaluation of anatomy and function as both diagnostic and prognostic tools. Biomarkers are used for risk stratification. Structural and surgical interventions are targeted for palliation and prevention of further decompensation in conjunction with pharmacologic, ablative, and device-based therapies for acute and chronic management of heart failure.
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