Final answer:
A partial rebreather mask is a type of oxygen mask that allows a patient to breathe in a mixture of oxygen and their exhaled breath. It can be used in prehospital settings depending on the patient's condition and oxygen requirements.
Step-by-step explanation:
A partial rebreather mask is a type of oxygen mask that allows a patient to breathe in a mixture of oxygen and their exhaled breath. It has a reservoir bag attached to it, which stores some of the exhaled air for reuse. This mask is recommended for prehospital use in certain situations, such as during transportation of patients with low oxygen levels or respiratory distress.
One advantage of the partial rebreather mask is that it can deliver higher oxygen concentrations compared to a simple face mask. However, it is not as efficient as a non-rebreather mask in delivering 100 percent oxygen. Therefore, its use should be assessed on a case-by-case basis depending on the patient's condition and oxygen requirements.