Anaes SAQs · Measurement & monitoring physics
Methods of gas analysis in anaesthesia
Final SAQ — the paramagnetic oxygen analyser (oxygen's unique paramagnetism), the infrared carbon dioxide analyser (the Beer-Lambert absorption at 4.3 micrometres), the mainstream versus the sidestream capnography, and the Raman/mass spectrometry alternatives.
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ANZCAFRCAABAEDAIC
Prompt
Compare the methods used to measure the oxygen and the carbon dioxide concentrations in the anaesthetic breathing system, and explain the principle of each.
Question
Compare the methods used to measure the oxygen and the carbon dioxide concentrations in the anaesthetic breathing system, and explain the principle of each.
References3ShowHide
- [4]Ishihara T, et al. Time-based capnography to diagnose airway obstruction. Animals, 2025.PMID 41375427
- [1]Moon K, et al. Pulse oximetry - a perioperative perspective. Diagnostics, 2026.PMID 42351472
- [42351473]Bersten AD, Soni N (eds) Oh's Intensive Care Manual. 8th edition, Elsevier, 2018.