THE EFFECT OF CHANGES IN THE PULMONARY VASCULAR BED PRODUCED BY ATROPINE, PULMONARY ENGORGEMENT, AND POSITIVE-PRESSURE BREATHING ON DIFFUSING AND MECHANICAL PROPERTIES OF THE LUNG*

Abstract

Several factors probably have some role in de- termining the volume of the effectively ventilated pulmonary capillary bed, including pulmonary blood flow, pulmonary vascular pressures, pul- monary blood volume, alveolar and blood gas ten- sions, and mechanical effects of ventilation.