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  • Title: Long-term follow-up of patients with synthetic right heart conduits.
    Author: Jonas RA, Freed MD, Mayer JE, Castaneda AR.
    Journal: Circulation; 1985 Sep; 72(3 Pt 2):II77-83. PubMed ID: 3161661.
    Abstract:
    Between 1971 and 1983, 201 patients received synthetic right heart conduits, predominantly porcine-valved Dacron conduits, at The Children's Hospital, Boston. There were 45 hospital deaths (22%). Follow-up has been achieved in 148 of 156 survivors (95%). Thirty-four conduits have been replaced, all because of conduit obstruction. The actuarial freedom from conduit replacement was 81% at 5 years, 61% at 7 years, and 0% at 10 years for valved conduits. There was no significant difference to 5 years in reoperation rate between patients with Carpentier-Edwards and those with Hancock conduits. Patients older than 18 years at the time of conduit insertion were 92% free of conduit replacement at 5 years. Those with nonvalved conduits were 100% reoperation free at 4 years. The actuarial survival of patients with valved conduits was 91% at 5 years and 83% at 10 years. The poor performance of porcine-valved tightly woven Dacron conduits warrants a change to use of an alternative conduit, particularly in smaller children. Possible alternatives include antibiotic-sterilized homografts and valved or nonvalved high-porosity knitted Dacron conduits appropriately pretreated with collagen impregnation or fibrin glue.
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