Final answer:
A non-rebreather mask delivers high flow rates of oxygen, typically 10 to 15 liters per minute, resulting in O₂ concentrations of 60-100%. The reservoir bag attached to the mask should not collapse completely; it should be monitored to ensure proper oxygen delivery.
Step-by-step explanation:
A non-rebreather mask is a device used in medicine to help patients receive high concentrations of oxygen. The non-rebreather mask is fitted with a bag that acts as a reservoir for oxygen, which allows for a higher percentage of oxygen to be delivered to the patient compared to standard face masks. This mask typically delivers oxygen at high flow rates, which can range from 10 to 15 liters per minute, achieving O₂ concentrations of 60-100% depending on the patient's breathing rate and the mask fit.
It is crucial to ensure that the reservoir bag does not collapse during use, as this would indicate that not enough oxygen is being supplied to maintain the desired flow rate and oxygen concentration. A partially deflated bag during inspiration is normal, but it should re-inflate during the patient's expiratory phase. If the bag collapses completely, the oxygen flow rate may need to be adjusted to keep the reservoir bag inflated to the necessary level to continue providing the high concentration of oxygen.