Pulmonary Recirculation:  Effects on Arterial Oxygen Saturation

A. Gerson Greenburg, MD; George Wu, BA; Robert Dreisin, BA; C. Frederick Kittle, MD
Arch Surg. 1969;99(3):344-345. doi:10.1001/archsurg.1969.01340150052008.
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A surgical procedure for increasing peripheral arterial oxygen saturation in the patient without congenital heart disease is not available. This experimental study was undertaken to determine whether surgical rearrangement of the pulmonary vasculature could be useful in increasing peripheral oxygen saturation.

Method  Under light halothane anesthesia ten mongrel dogs were ventilated and subjected to a right fifth intercostal space thoracotomy. The right main pulmonary artery and its four major branches were isolated. The right upper lobe vein was carefully dissected from the right atrial wall. The right pulmonary artery was divided distal to the origin of the middle lobe artery, and the distal end of the divided pulmonary artery was anastomosed to the right upper lobe vein. An end-to-side anastomosis was used in four and an end-to-end in six animals. The end-to-end anastomosis was performed when sacrifice of the middle lobe was necessitated by the anatomical arrangement of the pulmonary


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