BODY POSITION AND MODE OF VENTILATION INFLUENCES ARTERIAL PH, OXYGEN, AND CARBON-DIOXIDE TENSIONS IN HALOTHANE-ANESTHETIZED HORSES

  • 1 January 1977
    • journal article
    • research article
    • Vol. 38  (3) , 379-382
Abstract
Effects of body position and type of ventilation were determined on arterial blood gases (PaO2 [arterial O2 tension], PaCO2 [arterial CO2 tension]) and pH during and immediately following clinical halothane anesthesia in 36 young, physically conditioned horses. Horses in dorsal recumbency had a lower PaO2 than did similarly breathing horses in a lateral position. Predictably controlled positive-pressure ventilation improved arterial oxygenation and permitted maintenance of a normal PaCO2. Most horses, regardless of type of ventilation and operative body positioning, were hypoxemic in the immediate postanesthetic period. [Horses are particularly sensitive to the respiratory depressant effects of general anesthesia.].

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