What is the function of a portable oxygen bottle (POB) in first aid?

The function of a portable oxygen bottle (POB) in first aid is to supply oxygen during emergencies. In situations where a person experiences difficulty breathing, such as during respiratory distress or shock, administering supplemental oxygen can significantly improve their oxygen saturation levels. This is crucial for ensuring that vital organs receive the oxygen they need to function effectively. Portable oxygen bottles are designed to be easily transported and accessed quickly, which is essential in emergency scenarios where every second counts.

Providing water, acting as an alert system, or storing medical tools do not align with the primary purpose of a portable oxygen bottle. While hydration is important in first aid, it is not the role of a POB. Similarly, alert systems and storage of medical tools have distinct functions that do not encompass the immediate need for oxygen delivery in critical situations.