Although cardiovascular changes are minimal during anesthesia, respiratory depression may occur. Dogs can stop breathing for a period of time, and the veterinarian must be prepared to provide respiratory support if this happens. When using oxymorphone and diazepam, some dogs will react to loud noises in the operating room. Oxymorphone and diazepam is suitable for most patients except those with severely compromised liver function. The most recent injectable anesthetic used successfully in my practice is propofol.
Recovery is rapid and smooth.
Termination of propofol's effect has been attributed to the redistribution of the drug to muscles and fat, and to metabolism in the liver. When using propofol, the most remarkable aspect is how quickly the patient becomes anesthetized and how quickly the patient wakes up after the procedure is finished. This may be avoided by injecting propofol slowly until the desired effect is obtained. Equipment for assisted ventilation should be available when propofol is used. Inhalant anesthetics can be used to induce anesthesia by placing a facemask over the patient's nose and mouth.