Anaesthesia If an anaesthetist at high altitude uses plenum vaporizers. It will deliver the vapour concentration – A Higher than the original concentration at high partial pressure B Lower than the concentration at lower partial pressure C Higher than the concentration at same partial pressure D Lower than concentration at same partial pressure 💡 Explanation If an anaesthetist at high altitude uses plenum vaporizers. It will deliver the vapour concentration – ✓ Correct Answer: C. Higher than the concentration at same partial pressure