[Expert Solution]: A “ventilator bundle” may include which of…

A “ventilator bundle” may include which of the following? 1. Keeping the head ofthe bed at 30 degrees from the horizontal 2. Changing the ventilator circuits every 48 hours 3. Using heated humidifiers whenever possible 4. Using noninvasive positive pressure ventilation (NPPV) whenever possible a. 1 and 3 only b. 1 and 4 only c. 2 and 3 only d. 1, 2, and 4 only