Influence of One Lung Ventilation on Respiratory and Cardiovascular Function in Dogs.

概要

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This study was undertaken to examine the applicability and usefulness of one lung ventilation (OLV) in canine surgeries. The cardiovascular parameters and blood gas were analysed in dogs that had left OLV during general anesthesia for 60 min and the following 90 min under thoracentesis. In the OLV group of 6 dogs, mean pulmonary arterial pressure and pulmonary vascular resistance increased gradually in comparison with the two lung ventilation group of 6 dogs. However, the arterial O<SUB>2</SUB> tension decreased remarkably to 87, 6 mmHg with the lowered arterial pH, although arterial CO<SUB>2</SUB> tension increased during OLV. In conclusion, dogs with OLV have the disadvantage of the deterioration of respiratory condition in spite of hypoxic pulmonary vasoconstriction. Therefore, it is necessary to use assisted ventilation or other improvement to prevent atalectasis, for the safer application of OLV in dogs.
獣医麻酔外科学会の論文