Scavenging — FRCA Primary MCQ
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Correct answer: B — Scavenging system
Scavenging reduces occupational waste anaesthetic gas exposure. Infrared gas analyser is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Galvanic fuel cell is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Pressure transducer damping is less appropriate because it would fit a different clinical clue or a separate anaesthetic problem. Non-interchangeable screw thread 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