各種麻酔法の肺含水量に及ぼす影響に関する実験的研究 第2編 各種麻酔剤の肺含水量に及ぼす影響に関する実験的研究

To examine whether anesthetics have to do with the development of postoperative acute pulmonary edema, dogs were anesthetized with either ravonal, ether, cyclopropane, nitrous oxide and ether+hypotensive anesthesia and the water content of the lungs was measured after two hours. The results obtained were as follows: 1) When ravonal was intravenously injected during the respiration under the atmospheric air, the water content of the lungs increased slightly in comparison to the control. This is not to be ascribed to the direct action of ravonal but to anoxia and hypercapnia due to the inhibited respiration. 2) When closed circuit endotracheal anesthesia was performed under inhalation of pure oxygen, with any anesthetic, the water content of the lung did not vary and stayed within the standard deviation of the control.