anesthesia machine, an apparatus for administering inhalation anesthetic gases and vapors and for controlling ventilation. Although there are many different models, all have the following features: a delivery system for medical gases, a flowmeter to measure fresh gas flow (such as medical air, oxygen, nitrous oxide), vaporizers for volatilizing and combining the anesthetic agents with oxygen and other carrier gases such as medical air and nitrous oxide, a circuit for delivering the gas to and from the patient, monitoring equipment or gauges, a ventilator, and a scavenging system to collect and discharge excess waste gas. It has multiple systems for detecting and alerting clinicians to potentially dangerous conditions.
