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(Chest. 1967;52:688-692.)
© 1967 American College of Chest Physicians

Results of Surgery for Isolated Ventricular Septal Defects

A. J. Acinapura M.D.1; W. C. Sealy M.D.1; W. G. Young Jr. M.D.1; I. W. Brown M.D.1; and J. M. Porter M.D.1

1 Durham, North Carolina

The results of surgery in 60 patients with isolated ventricular septal defect and pulmonary hypertension is reported. The use of pulmonary to systemic flow and resistance ratios appears to be an important prognostic method in determining the operability of patients with a ventricular septal defect and severe pulmonary hypertension. A pulmonary to systemic resistance ratio (Rp/Rs) of .4 or less suggests mild pulmonary vascular disease, and that the pulmonary hypertension is secondary to a high flow shunt. A Rp/Rs ratio of 0.5 or greater implies severe pulmonary vascular obstruction and that surgery is contraindicated.






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Copyright © 1967 by the American College of Chest Physicians.