In a volume-targeted and pressure-limited mode, what is the primary breath parameter being controlled?

• A. Tidal Volume
• B. Pressure
• C. Flow
• D. Rate

Answer: (A)

This mode focuses on delivering a specific amount of air with each breath. The ventilator aims to give a set tidal volume and uses a maximum inspiratory pressure limit to reach that volume safely. So the breath parameter being controlled is the tidal volume. The pressure limit is there to protect the lungs, but the goal isn’t to hold a fixed pressure; it’s to ensure the delivered volume is correct. Rate controls how often breaths occur, and flow describes how quickly the volume is delivered, but neither is the primary target in this mode. If lung mechanics change, the ventilator may need higher pressure to reach the same volume, up to the safety limit.