VISUALIZATION OF THE PULMONARY ARTERY DURING ITS EMBOLIC OBSTRUCTION

Abstract
The purpose of this study was to work out a simple method of visualizing the pulmonary artery in the dog as Robb and Steinberg have done in man1 and then to study the vascular bed after the administration of drugs and after the production of embolism. In a previous publication2 the effect of embolism on the coronary circulation has been reported. In this paper we wish to report our observations on the effect of pulmonary embolism on the pulmonary vascular bed of the dog. Two hundred and sixty-three films were obtained of 48 dogs. The pulmonary vascular tree was first studied by injection of a barium sulfate suspension into the pulmonary conus distal to its ligature. Various angles were employed, and finally the right anterior and left anterior oblique positions were selected (fig. 1). The anteroposterior view shows that only the left pulmonary artery is filled adequately. In

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