Desflurane vaporiser — FRCA Primary MCQ

Correct answer: D — Desflurane heated pressurised vaporiser

Desflurane has high SVP and low boiling point. Ferromagnetic projectile risk is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. High-frequency linear ultrasound probe is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Doppler frequency shift is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Heat and moisture exchanger is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. In Primary FRCA physics and measurement, the safest answer is the one that follows the underlying physical principle and the limitations of the device.

Reference: Davis and Kenny Basic Physics and Measurement in Anaesthesia; RCoA Primary FRCA syllabus