EXERCISE STUDIES IN PATIENTS WITH CONGENITAL HEART DISEASE

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Abstract
The data collected during exercise at cardiac catheterization, in the supine position, show that the limit of exercise in patients with left to right shunts may well be determined by the degree of pulmonary flow that can be handled, and in patients with ventricular outflow obstruction by the absolute level of peak pressures a ventricle can generate. Thus baseline resting studies extrapolated for a given flow (based on an assumed need of approximately 700 cc. blood to move 100 cc oxygen to the periphery), may, in cases of a significantly disturbed hemodynamic state, well be sufficient to answer the question as to how much a patient with a single congenital heart lesion may be permitted to exercise.

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