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  • Title: Fontan operation: a comparison of lateral tunnel with extracardiac conduit.
    Author: Fiore AC, Turrentine M, Rodefeld M, Vijay P, Schwartz TL, Virgo KS, Fischer LK, Brown JW.
    Journal: Ann Thorac Surg; 2007 Feb; 83(2):622-9; discussion 629-30. PubMed ID: 17257998.
    Abstract:
    BACKGROUND: The purpose of this report is to compare the outcome of the extracardiac (EC) with the lateral tunnel (LT) Fontan. METHODS: From January 1990 to October 2004, the Fontan operation was performed in 162 patients, of which 49 were EC and 113 were LT. Cardiac morphology and ventricular dominance were similar, except EC patients were older and had a greater frequency of heterotaxy syndrome, and LT patients had a higher incidence of hypoplastic left heart syndrome. Preoperative transpulmonary gradient, ventricular end-diastolic pressure, McGoon index, room air saturation, and cardiac rhythm were similar. EC patients underwent superior caval pulmonary connection, and LT patients underwent hemi-Fontan. Cardiopulmonary bypass time was similar, but fewer EC patients needed aortic cross-clamping. Fenestration was more frequent in LT patients (EC, 16% versus LT, 73%; p < 0.01). RESULTS: Overall operative mortality was 1.8% (EC, 1 versus LT, 2; p = NS). Postoperative transpulmonary gradient, readmission for chylous effusion, and change in ejection fraction relative to preoperative level did not differ between cohorts. Resource utilization was higher in the EC group. The loss of sinus rhythm and the frequency of all neurologic events did not differ. There were seven late deaths (EC 4 versus LT 3; p = NS). Actuarial survival at 5 years was not significantly different (EC, 90% versus LT, 95%; p = 0.08). CONCLUSIONS: The EC and LT operation had comparable early and late mortality, readmission for chylous effusion, preservation of sinus rhythm, and frequency of all neurologic events. The more frequently fenestrated LT cohort used fewer resources.
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