What is the primary purpose of a ventilator?

• A. To monitor blood pressure
• B. To deliver IV medications
• C. To maintain adequate air exchange when normal respiration is inhibited or cannot be actively performed by the patient
• D. To measure oxygen saturation

Answer: (C)

Ventilation support is about ensuring enough air reaches the lungs when the patient can’t breathe adequately on their own. A ventilator delivers breaths, regulates the rate and volume of each breath, and can apply positive pressure to keep the airways open. This setup ensures adequate air exchange and gas elimination (oxygen in, carbon dioxide out), which is essential when spontaneous respiration is inhibited or impossible due to illness, injury, anesthesia, or neuromuscular weakness. Other devices are designed for different roles: monitoring blood pressure tracks circulation, infusing IV medications delivers drugs or fluids, and measuring oxygen saturation assesses oxygen levels without providing any breathing support.