Which of the Following Conditions Is an Indication for Application

Multiple Choice

Which of the following conditions is an indication for application of noninvasive ventilation (NIV) ?

A) The patient requires low concentrations of supplemental O₂.
B) The patient cannot swallow without the risk of aspiration.
C) The patient's peak cough flows are less than 3 L/sec.
D) Because of facial trauma, an airtight mask seal is impossible.