VC-CMV stands for which of the following?

• A. Volume-Controlled Continuous Mandatory Ventilation
• B. Volume-Controls Continuous Mandatory Ventilation
• C. Variable-Controlled Continuous Mandatory Ventilation
• D. Ventilation-Controlled Continuous Mode Ventilation

Answer: (A)

This question is testing how ventilator mode acronyms convey what is being controlled and how breaths are delivered. Volume-Controlled Continuous Mandatory Ventilation means the machine delivers every breath with a preset tidal volume at a fixed rate, and breaths are mandatory rather than patient-initiated. In this mode, the volume is the controlled variable, so the ventilator works to achieve the set tidal volume, adjusting pressure as needed within safety limits. The result is consistent delivered volume from breath to breath, regardless of the patient’s effort. That’s why this option is correct: it accurately combines volume control with continuous, mandatory ventilation.

The other phrasings don’t fit standard terminology. “Volume-Controls” uses incorrect grammar for the control term. “Variable-Controlled” implies a nonstandard term. “Ventilation-Controlled Continuous Mode Ventilation” rearranges the words in a way that doesn’t match recognized mode naming.