Anaes SAQs · Applied cardiovascular & respiratory physiology
The physiology of the perioperative hypoxaemia
Final SAQ — the five causes (the hypoventilation, the diffusion, the V/Q mismatch, the shunt, the low FiO2); the fall of the FRC and the atelectasis; the shunt (oxygen-refractory) versus the V/Q mismatch (oxygen-responsive); and the principles of the management.
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ANZCAFRCAABAEDAIC
Prompt
Explain the causes of the perioperative hypoxaemia using the physiological principles, and distinguish the shunt from the V/Q mismatch.
Question
Explain the causes of the perioperative hypoxaemia using the physiological principles, and distinguish the shunt from the V/Q mismatch.
References3ShowHide
- [4]Nimmagadda U, et al. Preoxygenation: physiologic basis, benefits, and potential risks. Anesth Analg, 2017.PMID 28099321
- [5]Nakamura S, et al. Intraoperative alveolar dead space fraction. J Cardiothorac Vasc Anesth, 2026.PMID 42225457
- [42225458]Bersten AD, Soni N (eds) Oh's Intensive Care Manual. 8th edition, Elsevier, 2018.