To assess left ventricular function in patients with d-transposition of the great arteries after arterial switch operation using cardiac magnetic resonance imaging.
Key Findings:
Most patients had preserved left ventricular function post-ASO.
Median left ventricular ejection fraction (LVEF) was 60%; 17% had reduced LVEF.
Neoaortic regurgitation was generally mild, with one case of severe regurgitation.
Late gadolinium enhancement (LGE) was present in 9.6% of patients, indicating potential myocardial scar tissue.
Interpretation:
The findings suggest that CMR assessment of LV function is reassuring for most patients post-ASO, with a need for long-term surveillance as patients age.
Limitations:
Retrospective, single-center design.
Small sample size and exclusion of some studies due to inadequate imaging.
Lack of longitudinal follow-up and variability assessment.
Conclusion:
CMR is valuable for assessing LV function and detecting scar tissue in patients post-ASO, highlighting the importance of ongoing monitoring as patients transition to adulthood.
