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. 2019 Feb;19(2):37-39.
doi: 10.1016/j.bjae.2018.11.005. Epub 2018 Dec 17.

Why do patients need extra oxygen during a general anaesthetic?

A B Lumb  1
Affiliations

Why do patients need extra oxygen during a general anaesthetic?

A B Lumb. BJA Educ. 2019 Feb.
No abstract available

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Conflict of interest statement

The author declares that they have no conflict of interest.

Figures

Fig 1
Fig 1
Electrical impedance tomography of ventilation distribution before and after induction of anaesthesia (white=well ventilated, blue=some ventilation, black=no ventilation). (A) Awake patient showing the normal situation of greater ventilation of the right lung and dependent regions on both sides. (B) Same patient 4 min after GA induction with positive pressure ventilation showing continued greater ventilation of the right lung, but now predominantly non-dependent regional ventilation. The figures show the percentage ventilation to the four quadrants.
See this image and copyright information in PMC

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