- Most patients demonstrated preserved left ventricular systolic function late following arterial switch operation.
- Reduced left ventricular ejection fraction (<55%) was observed in 17% of patients, although no patients had severe systolic dysfunction.
- Late gadolinium enhancement was identified in 9.6% of patients, indicating possible myocardial scar or fibrosis.
- Adult global 2D and 3D strain values were within published normal ranges despite prior reports suggesting impaired strain following arterial switch operation.
- Most patients had no or mild neoaortic regurgitation on cardiac magnetic resonance imaging.
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