Select the item that reflects an important consideration for selecting a mask for NPPV.

When selecting a mask for noninvasive positive pressure ventilation (NPPV), ensuring the appropriate mask or helmet size is crucial. An adequately sized mask ensures that there is a proper seal around the patient's face, which is essential for effective ventilation. A good fit prevents air leaks, maintains the correct pressure, and enhances patient comfort, all of which are important for the treatment's success.

Using a mask that is too large can result in inadequate ventilation due to leaks, while a mask that is too small can cause discomfort and skin breakdown. Therefore, selecting the right size is essential for both the efficacy of NPPV and the well-being of the patient.