Abstract
Comparison was made of blood gases, acid base balance and blood pressure during halothane (H), ether (E), halothane-ether mixture-azeotrope (FOE), halothane-nitro oxide (GOF) and ether-nitro oxide (GOE) anesthesia in 50 dogs.
In four groups (H, E, FOE, GOE), the arterial blood showed decrease of pH 0.05 to 0.100 and increase PaCO2 of 5 to 10 mmHg during inhalation anesthesia. Therefore, there was a slight respiratory acidosis. Meanwhile, PaO2 increased remarkably during H, E and FOE anesthesia. These parameters returned to the preanesthetic levels after spontaneous respiration.
Effects of inhalation anesthetics on arterial blood pressure was the most in H, followed by FOE and GOF, and the least in E and GOE.
