NCLEX Practice Questions: Quiz 847 The nurse is caring for a patient with emphysema and respiratory failure who is receiving mechanical ventila- tion through an endotracheal tube. To prevent ventilator-associated pneumonia (VAP), which action is most important to include in the plan of1. Administer ordered antibiotics as scheduled.2. Hyperoxygenate the patient before suctioning.3. Maintain the head of bed at a 30- to 45-degree angle.4. Suction the airway when coarse crackles are audible.