Which of the following is an example of a waste anesthetic gas?

The correct answer is isoflurane, which is classified as a waste anesthetic gas. Waste anesthetic gases are those that are released into the environment during the administration of anesthesia in veterinary and medical settings. Isoflurane is a volatile anesthetic agent commonly used in both human and veterinary anesthesia and can escape into the atmosphere when patients are being anesthetized.

This is significant because the inhalation of waste anesthetic gases can pose health risks to veterinary staff and patients alike. It requires proper scavenging systems to minimize exposure and ensure safety in the work environment.

Oxygen and medical air are not considered waste anesthetic gases; they are gases that support life and are actively used during anesthesia. Nitrous oxide, while it may be a concern for occupational exposure, is primarily used as an anesthetic agent rather than being classified under the waste category like isoflurane. This distinction is essential in understanding which substances pose the highest risk in terms of waste gas management in veterinary practices.