T / F At sea level the carrier gas leaving a sevoflurane vaporising chamber always contains approx. 21% sevoflurane.
T / F With increasing altitude, a vaporiser progressively delivers a lower partial pressure of anaesthetic than what is intended..
T / F At their boiling point, all substances have a saturated vapour pressure equal to the atmospheric pressure.
T / F A liquid becomes cold as it is vaporised, because heat energy contained in the liquid is converted to kinetic energy in the molecules which are escaping as a vapour.
T / F To maintain a constant temperature of the liquid anaesthetic, vaporisers are constructed of a good insulator such as copper.
Two bonus questions 🙂
- Our vaporisers are often referred to as “plenum” vaporisers. What does plenum mean in this context?
- The anaesthetic apparatus shown above includes a vaporiser. How does it work in conjunction with the breathing system shown?