STUDIES OF THE PULMONARY CIRCULATION IN MAN AT REST. NORMAL VARIATIONS AND THE INTERRELATIONS BETWEEN INCREASED PULMONARY BLOOD FLOW, ELEVATED PULMONARY ARTERIAL PRESSURE, AND HIGH PULMONARY “CAPILLARY” PRESSURES 1

Abstract

While many studies have been carried out on the dynamics of the pulmonary circulation in ex- perimental animals, few studies of this subject have been made in man until recently. With the advent of the cardiac catheter (