Pulmonary valvotomy under normothermic caval inflow occlusion

Area of Science:

• Pediatric Cardiology
• Cardiovascular Surgery
• Congenital Heart Disease

Background:

• Pulmonary valve stenosis (PVS) is a critical congenital heart defect requiring timely intervention.
• Surgical pulmonary valvotomy has been a standard treatment, with various techniques employed.
• Assessing the long-term efficacy and safety of established surgical methods is crucial for patient care.

Purpose of the Study:

• To evaluate the safety and long-term hemodynamic outcomes of pulmonary valvotomy performed with normothermic caval inflow occlusion in pediatric patients.
• To establish a benchmark for assessing newer, less invasive interventions like percutaneous balloon pulmonary valvotomy.

Main Methods:

• Retrospective analysis of 94 children undergoing pulmonary valvotomy between 1972 and 1983.
• Utilized normothermic caval inflow occlusion technique.
• Mean follow-up of 45 months, including neonates and infants.

Main Results:

• No early or late deaths were observed in the study cohort.
• Excellent long-term hemodynamic results with no need for repeat valvotomy for recurrent stenosis.
• Two patients required re-operation for hypoplastic pulmonary annulus, necessitating a transannular patch.
• Neonates with critical PVS experienced transient cyanosis post-surgery, followed by improved oxygen saturation.

Conclusions:

• Pulmonary valvotomy with normothermic caval inflow occlusion is a safe, cost-effective procedure with excellent early and late results.
• This surgical technique provides a reliable standard for comparison with emerging percutaneous interventions.
• The study supports the continued use of this valvotomy method for PVS in pediatric populations.