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Surgical experience with persistent truncus arteriosus in symptomatic infants under 1 year of age. Report of 13
Insights
Early intracardiac repair for persistent truncus arteriosus in infants offers better outcomes than pulmonary artery banding. This approach, potentially followed by conduit replacement, shows significant advantages for surgical treatment of this congenital heart defect.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Surgery
- Medical Device Technology
Background:
- Persistent truncus arteriosus (PTA) is a severe congenital heart defect requiring early surgical intervention.
- Surgical strategies for PTA have evolved, with varying outcomes depending on the approach.
- Infants with PTA present significant management challenges due to their critical condition.
Purpose of the Study:
- To evaluate the long-term outcomes of different surgical strategies for persistent truncus arteriosus (types I and II) in infants.
- To compare the efficacy of early intracardiac repair versus pulmonary artery banding followed by late repair.
- To assess the role of extracardiac conduits in infant cardiac surgery for PTA.
Main Methods:
- Retrospective analysis of 13 infants under 1 year of age with persistent truncus arteriosus (types I or II) operated between 1974 and 1980.
- Surgical interventions included pulmonary artery banding (10 cases) and primary total correction (3 cases).
- Outcomes assessed included mortality, need for re-intervention, and development of complications like pulmonary vascular disease.
Main Results:
- Pulmonary artery banding resulted in a 50% mortality rate, with survivors often developing complications or requiring late repair.
- Primary total correction in three infants led to favorable outcomes, with one needing conduit replacement after 5.5 years.
- Antibiotic-sterilized homograft conduits are now preferred over heterografts for extracardiac repairs in infancy.
Conclusions:
- Early intracardiac repair for persistent truncus arteriosus, with potential for later conduit replacement, demonstrates superior long-term results compared to pulmonary artery banding and delayed repair.
- The choice of extracardiac conduit (homograft preferred) is crucial for infant cardiac surgery.
- Optimal treatment strategies for infants under 3 months with PTA remain an area of ongoing concern and research.
Abstract:
Between January 1974 and November 1980, 13 symptomatic infants under 1 year of age with persistent truncus arteriosus type I or II underwent surgery. Pulmonary artery banding was performed in 10 cases, with five deaths. Among the survivors, one developed severe pulmonary vascular disease and only two underwent late intracardiac repair. Primary total correction was performed in three infants and all are well, though one required conduit replacement five and a half years after the initial procedure. Recently, antibiotic sterilised homograft conduits, rather than heterografts, have been preferred as extracardiac conduits in infancy. Early intracardiac repair followed, if necessary, by later conduit replacement appears to have significant advantages over "conventional" pulmonary artery banding and late total correction. Concern remains on the treatment of choice in infants under 3 months of age.