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Pulmonary artery banding for ventricular septal defect with pulmonary hypertension
Insights
Pulmonary artery banding (PAB) effectively reduces pulmonary artery pressure in infants, improving outcomes for children with congenital heart defects like ventricular septal defect (VSD) before later correction.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Surgery
- Cardiovascular Physiology
Background:
- Congenital heart defects, such as ventricular septal defect (VSD), often require surgical intervention.
- Pulmonary artery banding (PAB) is a palliative procedure used to manage high pulmonary blood flow in infants with complex heart conditions.
- Two-stage surgical treatment, involving PAB followed by complete correction, is a strategy for high-risk pediatric patients.
Purpose of the Study:
- To evaluate the efficacy and outcomes of pulmonary artery banding (PAB) as a preliminary procedure for infants with congenital heart defects.
- To assess the impact of PAB on pulmonary artery pressure and pulmonary blood flow.
- To determine the survival rates and long-term results of a two-stage surgical approach for ventricular septal defect (VSD) and other complex heart anomalies.
Main Methods:
- Retrospective review of 60 children undergoing PAB.
- Analysis of patient data including age at banding and debanding, presence of isolated VSD versus other anomalies, and subsequent total correction.
- Hemodynamic assessment through cardiac catheterization before PAB, after PAB, and after total correction.
Main Results:
- PAB significantly reduced pulmonary artery pressure from a mean of 53.5 mm Hg to 25.3 mm Hg.
- Survival rates were high: 90% after PAB and 94.3% after total correction.
- The cumulative mortality for the two-stage treatment of VSD was 8.3%.
Conclusions:
- Pulmonary artery banding at the altitude of Denver (1,600 m) is an effective method to decrease pulmonary artery pressure and prepare high-risk infants for subsequent total correction.
- The two-stage surgical approach involving PAB demonstrates favorable survival outcomes for infants with complex congenital heart disease, including VSD.
- PAB successfully converts high-risk infants into lower-risk candidates for definitive surgical repair.
Abstract:
Sixty children in this series underwent pulmonary artery banding (PAB); isolated ventricular septal defect (VSD) was present in 24, and 20 were corrected seven months to ten years and eight months after PAB. Other anomalies were present in 37, and 15 were eventually totally corrected. Survival after PAB was 90% (95.8% with isolated VSD), and 94.3% (95% with isolated VSD) after total correction. Mean age at banding was 12.9 months, and 52.6 months at debanding. All patients underwent catheterization before PAB; 39 underwent catheterization after PAB, and ten after total correction. Pulmonary artery blood pressure was reduced from 53.5 mm Hg to 25.3 mm Hg by banding. Most patients had only moderately increased pulmonary blood flow. Banding at the altitude of Denver (1,600 m) appears to be an effective means to convert high-risk infants into lower-risk children for total correction. The cumulative mortality for two-stage treatment of VSD was 8.3%.