Pulmonary atresia with intact ventricular septum

Area of Science:

• Pediatric Cardiology
• Congenital Heart Disease Surgery

Background:

• Neonates with pulmonary atresia and intact ventricular septum rely on the ductus arteriosus for pulmonary blood flow.
• Early intervention is critical to prevent ductal closure and ensure adequate circulation.

Purpose of the Study:

• To present the experience and evolving management approach for neonates with pulmonary atresia with intact ventricular septum.
• To analyze surgical outcomes based on right ventricular morphology and associated anomalies.

Main Methods:

• Retrospective review of 16 consecutive neonates managed between 1978 and 1984.
• Classification of patients into four groups based on right ventricular morphology.
• Surgical procedures included systemic-pulmonary artery shunt, shunt with pulmonary valvotomy, and pulmonary valvotomy alone.

Main Results:

• Systemic-pulmonary artery shunt is identified as the most important neonatal palliative procedure.
• Current routine involves left subclavian-main pulmonary artery shunt with a polytetrafluoroethylene tube and transpulmonary valvotomy when indicated.
• One death occurred post-neonatal palliation and one post-hemodynamic repair among the studied patients.

Conclusions:

• The left subclavian-main pulmonary artery shunt offers advantages for neonatal palliation in pulmonary atresia with intact ventricular septum.
• Management strategies should consider right ventricular morphology and the presence of sinusoidal-coronary artery communications.