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Staged surgical management of tetralogy of Fallot in infants
Insights
Staged management for tetralogy of Fallot improved survival rates, with recent mortality near 5%. Primary repair is best for infants with favorable anatomy and no other health issues.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease Surgery
Background:
- Tetralogy of Fallot is a complex congenital heart defect requiring surgical intervention.
- Palliative shunts were historically used to manage symptoms in infants with Tetralogy of Fallot.
- Outcomes for palliative shunts have evolved over time with surgical advancements.
Purpose of the Study:
- To evaluate the outcomes of palliative shunt surgery for Tetralogy of Fallot in young children.
- To compare survival rates between early and later periods of palliative shunt procedures.
- To assess the effectiveness of staged management versus primary repair for Tetralogy of Fallot.
Main Methods:
- Retrospective analysis of 61 infants under 24 months undergoing palliative shunts for Tetralogy of Fallot.
- Patients were divided into two groups based on surgical periods: 1965-1970 and 1971-1977.
- Survival rates, types of palliative anastomoses, and outcomes of subsequent definitive intracardiac repair were analyzed.
Main Results:
- Early palliative shunt period (1965-1970) had a mortality rate of 23.3% (7/30), while the later period (1971-1977) had 0% mortality (0/31).
- The Blalock-Taussig anastomosis became more common in the later period.
- Cumulative mortality for the entire cohort was 25%, but recent experience (1971-1977) showed a cumulative mortality near 5%.
Conclusions:
- Staged management of Tetralogy of Fallot has shown significant improvement in survival rates, particularly in recent years.
- Primary intracardiac repair is advantageous for infants with favorable anatomy and no comorbidities.
- Staged management remains crucial for infants with unfavorable anatomy or associated medical problems.
Abstract:
A cohort of 61 consecutive patients 24 months of age of younger had palliative shunts for symptoms of tetralogy of Fallot during a 12-year period. Thirty-six of these patients have been followed through definitive intracardiac repair or to death. For analysis palliative operations were separated into two six-year periods, 1965--1970. During the first period seven of 30 infants operated on died; all 31 infants operated on during the second period survived. The Waterston anastomosis was performed most frequently (67%) during the first period; the Blalock-Taussig anastomosis was performed in 68% of infants during the second period. Of 54 hospital survivors, three died before definitive intracardiac repair. Two of the three interim deaths were related to heart disease. Twenty-six of the remaining 51 patients have had definitive intracardiac repair with two deaths (8%). Twenty-four in this group had intracardiac repair since 1973 with one hospital death (4%). The cumulative mortality for the entire cohort is 25%, but more recent experience (1971--77) indicates a cumulative mortality near 5%. The recent mortality rate for staged management is less than the 14% rate reported by others for primary intracardiac repair of tetralogy of Fallot in 205 infants. We conclude that primary intracardiac repair has important advantages for infants with tetralogy of Fallot who have favorable anatomic features and no other associated cardiac lesions or medical problems. Staged management of tetralogy of Fallot is still recommended for infants with unfavorable anatomy, additional lesions or associated medical problems.