Stenting of Native Right Ventricular Outflow Tract Obstructions in Symptomatic Infants

Area of Science:

• Pediatric Cardiology
• Interventional Cardiology
• Congenital Heart Disease

Background:

• Symptomatic young infants with congenital heart defects often require initial palliation.
• Right ventricular outflow tract (RVOT) obstruction is a common defect requiring intervention.
• Surgical repair in very young or high-risk infants can be challenging.

Purpose of the Study:

• To evaluate the feasibility, safety, and effectiveness of RVOT stenting in young infants.
• To assess RVOT stenting as a potential bridge to surgical repair.
• To determine outcomes in infants with severe congenital heart defects undergoing RVOT stenting.

Main Methods:

• A multicenter study involving 35 infants undergoing RVOT stenting between 2009 and 2011.
• Patients included those with hypoxemic spells, respiratory support, or severe malformations.
• Data collected on procedural success, complications, reinterventions, and subsequent surgical repair.

Main Results:

• RVOT stenting was technically successful in 33 of 35 patients, improving oxygen saturation from 77% to 90%.
• No procedural complications occurred; 17 patients required 1-3 reinterventions during follow-up.
• 27 patients underwent successful surgical repair after stenting, with no perioperative deaths.

Conclusions:

• RVOT stenting is a safe and effective initial management strategy for symptomatic young infants.
• This approach provides successful palliation and serves as a bridge to surgical repair.
• Stenting is a viable option for infants not suitable for immediate surgical therapy or at high risk.