What is the correct way to turn the knob of the POB when assisting a passenger with shortness of breath?

The correct method for operating the portable oxygen bottle (POB) when assisting a passenger experiencing shortness of breath is to turn the knob counterclockwise and pinch the valve. This action allows for the release of oxygen flow to the passenger, providing immediate relief during a respiratory distress situation.

Turning the knob counterclockwise is essential because it enables the flow of oxygen, ensuring that the passenger receives the required oxygen supplement quickly. The action of pinching the valve is necessary to maintain control over the amount of oxygen being dispensed, thus preventing an uncontrolled release that could overwhelm the passenger.

The focus is on ensuring that the passenger receives adequate oxygen while managing the flow effectively. Other methods or positions related to turning the knob and releasing oxygen would not facilitate the correct flow or could result in no oxygen being dispensed at all, which could be detrimental in an emergency scenario.