Key result
Electrophysiologic study post-Fontan repair reveals abnormal pacemaker automaticity in 50% of patients.
Why the study?
Cardiac arrhythmias are well recognized sequelae of the Fontan operation for complex congenital anomalies, but detailed electrophysiologic effects after Fontan repair were evaluated in this study.
Observational (n=30)
Electrophysiologic evaluation after Fontan repair reveals frequent abnormalities including sinus node dysfunction, prolonged atrial refractoriness, delayed intraatrial conduction, and inducible atrial arrhythmias.
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High arrhythmia burden early after Fontan supports vigilant monitoring; leaves open optimal prevention strategies.
Kürer et al. (1991) conducted an observational in Functional single ventricle (n=30). Modified Fontan repair was evaluated on Abnormalities of sinus node or ectopic pacemaker automaticity. Electrophysiologic evaluation 1.9 years after Fontan repair revealed abnormal sinus node or ectopic pacemaker automaticity in 50% of patients, and sustained supraventricular arrhythmias in 27%.
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