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[Surgical outcomes of arrhythmia surgery associated with total cavo-pulmonary connection conversion for failed Fontan].

BACKGROUND
The occurrence of late-onset supraventricular tachyarrhythmia is one of the major factors for Fontan failure. In 1999, we initiated the arrhythmia surgery with combined total cavo-pulmonary connection (TCPC) conversion for failed Fontan patients.


PATIENTS AND METHODS
From 1999 to 2008, a total of 7 patients (5 males) underwent arrhythmia surgery with TCPC conversion for supraventricular tachyarrhythmia causing Fontan failure. Median age at operation and duration from last Fontan operation were 20.3 year-old (14.5-38.9) and 15.6 years (9.9-26.2), respectively. Previous Fontan procedure was atrio-pulmonary connection (APC) in 4 patients, lateral tunnel in 2, and right atrial-ventricular anastomosis (Bjork procedure) in 1. Right side maze procedure was applied for intraatrial reentrant tachycardia (IART) and full maze for atrial fibrillation (Afib).


RESULTS
There ware no early death and 1 late death due to infectious endocarditis for median followup at 7.4 years (1.3-10.3). None of the patients showed recurrent or new onset IART or Afib, including the late expired case. Current New York Heart Association functional class was I in 4 patients and II in 2.


CONCLUSIONS
TCPC conversion with arrhythmic surgery was successfully performed failed Fontan patients. All patients were converted to sinus rhythm and have kept it until now.