What control toggles between manual and mechanical ventilation?

What control toggles between manual and mechanical ventilation?

• A. Selector switch
• B. Mode selector
• C. Ventilation toggle
• D. Power switch

Answer: (A)

The essential control here is a selector switch. It physically shifts the breathing circuit between manual bag ventilation and machine-driven ventilation, allowing you to switch from squeezing the reservoir bag to letting the ventilator deliver breaths. The mode selector changes how the ventilator delivers breaths (e.g., volume vs. pressure modes), not whether breaths come from the machine or from manual bagging. The power switch merely turns the machine on or off, and a “ventilation toggle” isn’t the standard term for this specific function.

The essential control here is a selector switch. It physically shifts the breathing circuit between manual bag ventilation and machine-driven ventilation, allowing you to switch from squeezing the reservoir bag to letting the ventilator deliver breaths. The mode selector changes how the ventilator delivers breaths (e.g., volume vs. pressure modes), not whether breaths come from the machine or from manual bagging. The power switch merely turns the machine on or off, and a “ventilation toggle” isn’t the standard term for this specific function.