1 From the Sharon Cardiovascular Unit of the Children's Hospital Medical Center and the Departments of Pediatrics and Surgery, Harvard Medical School, Boston, Massachusetts.
The records of 15 infants with pulmonary atresia and 19 infants with critical pulmonic stenosis and intact ventricular septum, all under 1 year of age, have been reviewed. Symptoms started earlier and were more severe in the group with pulmonary atresia. All patients showed arterial unsaturation, and many had congestive heart failure The electrocardiogram was the most helpful tool in differentiating pulmonary atresia from pulmonic stenosis with intact ventricular septum. The presence of P pulmonale, significant right axis deviation, and right ventricular hypertrophy favors pulmonic stenosis. At cardiac catheterization, patients belonging to both groups showed right ventricular hypertension of significant degree, but this was more marked in infants with pulmonic stenosis. Results of surgery for pulmonary atresia with intact ventricular septum, by a variety of methods, have been uniformly poor up to the present. Direct attack on the pulmonary outflow tract, when possible, may offer more promise for the future. Pulmonary valvotomy is the operation of choice for pulmonic stenosis and the results are good.
© 1967 American Heart Association, Inc.
Diagnosis and Surgical Treatment of Infants with Critical Pulmonary Outflow Obstruction
Study of Thirty-four Infants with Pulmonary Stenosis or Atresia, and Intact Ventricular Septum
Key Words: Systemic-pulmonary artery shunt • Transventricular valvotomy • Hyperbaric surgery • Hypoxic syncope • Congenital heart disease • Cyanosis
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