Related Experiment Videos
Pulmonary atresia with intact ventricular septum. Sixteen-year experience
Insights
Infants with pulmonary atresia and intact ventricular septum (PA-IVS) need surgery. A combined valvotomy and shunt procedure offers better survival for these critical patients.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease Surgery
- Thoracic Surgery
Background:
- Pulmonary atresia with intact ventricular septum (PA-IVS) is a severe congenital heart defect requiring prompt surgical treatment.
- Early surgical strategies for PA-IVS had limited success, highlighting the need for improved palliative approaches.
Purpose of the Study:
- To evaluate the effectiveness of different palliative surgical interventions for infants with PA-IVS.
- To determine the optimal initial surgical management to improve survival and facilitate future corrective procedures.
Main Methods:
- Retrospective review of 30 infants with PA-IVS undergoing palliative surgery between 1962 and 1978.
- Analysis of outcomes for isolated pulmonary valvotomy, systemic-pulmonary artery shunt, and combined valvotomy-shunt procedures.
- Assessment of subsequent corrective surgeries and long-term survival.
Main Results:
- Isolated pulmonary valvotomy had no survivors. Isolated shunts resulted in 50% early survival.
- The combined valvotomy and shunt procedure demonstrated significantly improved early survival (14 out of 17 patients).
- Subsequent corrective open-heart procedures were successful in 5 out of 8 patients, with long-term survival up to 10 years.
Conclusions:
- The combined valvotomy and shunt procedure is recommended for initial palliation in PA-IVS infants.
- This approach increases pulmonary blood flow and promotes right ventricular growth, essential for later definitive repair.
- Regular postoperative catheterization is crucial to monitor valvotomy adequacy and guide timing for corrective surgery.
Abstract:
Infants with pulmonary atresia and intact ventricular septum (PA-IVS) usually require urgent surgical intervention. Thirty patients with this anomaly, seen at the Columbia-Presbyterian Medical Center between 1962 and 1978, had palliative operations, 26 within the first 3 days of life. Six underwent a closed pulmonary valvotomy alone, with no survivors; six had only a systemic--pulmonary artery shunt, with three early survivors. Because of this experience, 17 had a combined procedure of valvotomy and shunt, with 14 early survivors. One patient recently underwent a definitive right ventricular outflow patch procedure with cardiopulmonary bypass. Eight patients subsequently have had corrective open-heart procedures, with five patients surviving from 2 to 10 years. A unicusp aortic homograft was used for repair in five and a Hancock valved conduit in three. Four patients are presently awaiting operation. We conclude that the initial surgical management of these critically ill infants must not only increase pulmonary blood flow but in addition provide an opportunity for right ventricular growth. Thus we continue to advocate the combined procedure of a valvotomy plus a shunt to provide adequate palliation. Repeat catheterization should be performed within a year to confirm the adequacy of the valvotomy, since this is essential to maximal right ventricular enlargement and to allow for definitive correction at a later date.