Arrhythmias after the Fontan operation indicate underlying hemodynamic dysfunction and are associated with poor perioperative outcomes, necessitating medical and surgical modifications.
Except for his bundle tachycardia in the perioperative period, early and late arrhythmias after a Fontan operation seem to be a consequence of adverse preoperative and postoperative haemodynamic function. The perioperative outcome is therefore poor even when the patient can be restored to sinus rhythm. Medical and surgical modifications to improve the haemodynamic disturbances associated with arrhythmias are therefore indicated.
Gewillig et al. (Wed,) studied this question.