Journal of cardiovascular electrophysiology
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J. Cardiovasc. Electrophysiol. · Feb 2002
Atrial morphology in hearts with congenitally corrected transposition of the great arteries: implications for the interventionist.
In view of the possible need for septal puncture to ablate left-sided lesions and the occasional difficulty in coronary sinus (CS) cannulation, we investigated relevant anatomic features in the right atrium of hearts with congenitally corrected transposition of the great arteries (ccTGA). ⋯ The shorter posterior "septal" margin in hearts with ccTGA may increase the risk of exiting the heart while performing septal puncture when pointing the needle posteriorly. The shorter CS isthmus and the abnormal location of the CS opening in some of these hearts are important when contemplating radiofrequency ablation in this area.