NOVA Clinical Anesthesia Exam 1 Practice

Powering the machine is the main idea here. The on/off switch energizes all electronic and pneumatic subsystems so gas delivery, the ventilator, monitoring, alarms, and safety interlocks can operate. Without power, the flow controls, vaporizers, and monitors wouldn’t function, making safe anesthesia delivery impossible. Gas flows are adjusted with the flowmeter controls and knobs after the system is powered. Pressure monitoring relies on sensors and displays that require power, not the switch itself. Exhaust or scavenging systems also need power to operate, so venting is a consequence of the machine being on, not the switch’s primary job.