PaCO 2 and the Pre-ejection Period: The PaCO2 /Inotropy Response Curve

Abstract

The squared reciprocal of the pre-ejection period (1/PEP2) is an inotropic index which may be measured without catheterization of the left ventricle. Changes in 1/PEP2 in response to changes in arterial carbon dioxide tension have been studied. The character of the Paco2/myocardial inotropy response