Which of the following is NOT a disadvantage of standard O2 masks?

Standard oxygen masks are designed to deliver a specific concentration of oxygen to patients, and they can have several disadvantages. The correct answer indicates that the statement regarding "FIO2 will not vary with air leakage" is not a disadvantage attributable to standard oxygen masks.

When using standard oxygen masks, the flow of oxygen is intended to maintain a certain fraction of inspired oxygen (FIO2) based on the mask’s design and the flow rate. While it is true that air leakage can affect the delivery of oxygen, these masks are calibrated to deliver a specific range of FIO2 based on the flow rates used. Factors such as the patient's breathing pattern and seal around the mask can influence actual oxygen delivery, but the basic principle of operation does not cause FIO2 to be unchangeable due to air leakage. Therefore, while air leakage can complicate therapy, the design of standard oxygen masks does take into account the need for maintaining FIO2 to some extent.

In contrast, difficulties in applying the mask, patient discomfort, and increasing risks of aspiration are genuine disadvantages noted in clinical settings. These issues arise because standard oxygen masks can cause discomfort due to their fit and pressure on the face, making them challenging for some patients to tolerate, particularly those with