A Datex Ohmeda Sevotec 5 vaporizer is tipped over while being attached to the anesthesia machine, but is placed upright and installed. The soonest it can be safely used is

A Datex Ohmeda Sevotec 5 vaporizer is tipped over while being attached to the anesthesia machine, but is placed upright and installed. The soonest it can be safely used is

• A. After 30 minutes of flushing with dial set to off
• B. After 6 hours of flushing with dial to off
• C. After 24 hours of flushing with dial set to off
• D. After 30 minutes with dial at low concentration

Answer: (D)

When a vaporizer is tipped, liquid anesthetic can flow into the bypass and flow paths. If you immediately resume use after righting it, you risk delivering an uncontrolled bolus of agent or having unexpected airway concentrations. The way to minimize that risk is to purge the system with fresh gas for a period, allowing any entrained liquid to be washed out before normal use. For a Sevotec 5 vaporizer, the recommended approach is to purge the circuit for about 30 minutes while the dial is set to a low concentration. This setup provides a purge flow that sweeps residual liquid from the vaporizer and breathing circuit without delivering a significant amount of vapor to the patient. Prolonged delays (hours) aren’t necessary and would unnecessarily delay surgery, while starting with the dial off or at high concentration could allow or deliver unintended vapor if liquid remains in the flow path. Set to a low concentration during the purge keeps any output minimal while still allowing the purge to occur, making this the safest and most practical restart time.

When a vaporizer is tipped, liquid anesthetic can flow into the bypass and flow paths. If you immediately resume use after righting it, you risk delivering an uncontrolled bolus of agent or having unexpected airway concentrations. The way to minimize that risk is to purge the system with fresh gas for a period, allowing any entrained liquid to be washed out before normal use.

For a Sevotec 5 vaporizer, the recommended approach is to purge the circuit for about 30 minutes while the dial is set to a low concentration. This setup provides a purge flow that sweeps residual liquid from the vaporizer and breathing circuit without delivering a significant amount of vapor to the patient. Prolonged delays (hours) aren’t necessary and would unnecessarily delay surgery, while starting with the dial off or at high concentration could allow or deliver unintended vapor if liquid remains in the flow path. Set to a low concentration during the purge keeps any output minimal while still allowing the purge to occur, making this the safest and most practical restart time.