In order to accurately assess the severity of pulmonary valvular stenosis, one must consider both the right ventricular systolic pressure and the cardiac output. The calculation for the pulmonary valvular area utilizes both of these factors, but has been time consuming to perform. A simplified method is presented for determining the pulmonary valvular area by calculating the pulmonary valvular resistance and relating this value to the pulmonary valvular area.
Bibliographical noteFunding Information:
From the Department of Pediatrics. University of Minnesota, This study was supported by Public Health Service Fellowship National Heart Institute, and the Dwan Family Fund. Received for publication Jan. 3. 1966.
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