______ are substances that may excite or inhibit a motion or an action

A patient's baseline arterial blood gas (ABG) reveals a partial pressure of oxygen (PaO2) of 78 mm Hg while receiving 35% supplemental oxygen

What should the ventilator fractional inspired oxygen (FIO2) be set at to obtain a target PaO2 of 95 mm Hg? a. 0.34 b. 0.43 c. 0.55 d. 0.67

Bougie, Heaney, Hegar, and Van Buren are types of:

a. dilators b. dissectors c. drains d. dressings