We reported a case in which the cavo-tricuspid isthmus (CTI) in both the systemic venous atrium (SVA) and pulmonary venous atrium (PVA) was necessarily targeted in a patient following Senning operation.
The patient was a 26-year-old man who was diagnosed d-transposition of the great arteries and accepted Senning operation at 14 months of age.
The most common form of IART encountered in patients after Senning operation is a circuit that rotates around the TV in a manner similar to typical CTI-dependent atrial flutter.[sup] However, several features distinguish it from typical flutter.
Necessity for biatrial ablation to achieve bidirectional cavotricuspid isthmus conduction block in a patient following Senning operation. J Cardiovasc Electrophysiol 2004;15:945-9.