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Management strategy and long-term outcome for truncus arteriosus
C P Brizard1, A Cochrane, C Austin
1Victorian Paediatric Cardiac Surgical Unit, Royal Children's Hospital, Vic, Melbourne, Australia. cardiac@cryptic.rch.unimelb.edu.au
Summary
Elective surgical repair of truncus arteriosus at 2-3 months of age is feasible and reduces surgical risk. This policy improved outcomes for infants not requiring intensive hospital care.
Area of Science:
- Pediatric Cardiac Surgery
- Congenital Heart Defects
- Surgical Outcomes
Background:
- Truncus arteriosus is a complex congenital heart defect requiring surgical intervention.
- Optimal timing for surgical repair is crucial for improving patient survival and long-term outcomes.
- Previous strategies involved earlier intervention, especially in cases of severe heart failure.
Purpose of the Study:
- To evaluate a consistent policy of elective surgical repair for truncus arteriosus.
- To assess the long-term outcomes of patients undergoing repair at 2-3 months of age.
- To identify risk factors influencing hospital mortality in this patient population.
Main Methods:
- Retrospective analysis of 82 patients with truncus arteriosus undergoing total repair.
- Repair timing based on a policy of elective surgery at 2-3 months for stable infants.
- Earlier repair was reserved for infants with uncontrolled congestive heart failure.
Main Results:
- Overall hospital mortality was 13.4%, with 81% actuarial survival at 80 months.
- Infants repaired between 1-6 months had lower hospital mortality (4/48) compared to neonates (5/17).
- Low body weight (< 3 kg) was identified as the sole significant independent risk factor for hospital mortality.
Conclusions:
- A policy of deferring elective truncus arteriosus repair to 2-3 months of age is achievable.
- This strategy appears to lower surgical risk by selecting for lower-risk patients.
- The findings support a staged approach to surgical management based on clinical stability.