Transcatheter Closure of Fenestration after Modified Fontan Operation in Children

Transcatheter Closure of Fenestration after Modified Fontan Operation in Children

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Background: Fenestration in the modified Fontan operation allows right-to-left shunting, which reduces the Fontan pathway pressure and improves cardiac output.However, on account of the fact that persistent right-to-left shunting results in cyanosis and paradoxical emboli, fenestration closure is recommended after recovery from the Fontan operation.Methods: This study recruited 3 patients who underwent the transcatheter Dog Bowl closure of the Fontan fenestration with the ASD-Amplatzer because of severe cyanosis and significant intracardiac shunts.Results: Fenestration closure was performed at a mean age of 8 yr (6-12 yr) and average of 15 months after the Fontan operation.Aortic O2 saturation increased by an average of 17.

6% (9-26%).During more than a two-year period of follow-up (mean: 27 months), two patients had complete occlusion on echocardiography and the other one had a small residual shunt.One Outdoor End Table of these patients had atrial flutter during the follow-up.Conclusion: The transcatheter closure of the Fontan fenestration is a safe and feasible technique that is effective in elevating systemic O2 saturation and well-being and confers acceptable growth and development in children.