Tec 6 Desflurane Vaporiser — FRCA Primary MCQ
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Correct answer: D — Desflurane has a boiling point of 22.8°C near room temperature requiring a heated pressurised system
Desflurane boils at 22.8°C with SVP of 88.5 kPa at 20°C. A conventional vaporiser cannot accurately control output because small temperature changes cause large SVP changes. The Tec 6 heats desflurane to 39°C at 2 atm and electronically injects measured vapour into fresh gas flow.
Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment