Pre-oxygenation: reduced FRC and shunt

In this Episode we discuss the effects of pregnancy on a patient's respiratory physiology.
We step through the SAQ #3 from the 2019 feb/march ANZCA exam paper:

Discuss the effects of pregnancy on the respiratory system that are relevant to the practice of anaesthesia. Include in your answer how these effects influence the conduct of anaesthesia.

Respiratory changes during pregnancy affects:

1.    Airway management
2.    Pre-oxygenation
3.    Ventilation
4.    Lung mechanics
5.    Uptake of inhalational agents

Some resources include:
My technique for rapid preoxygneation
https://youtu.be/dr9VzkMCK1E

https://networks.anzca.edu.au/d2l/le/content/7669/Home?itemIdentifier=D2L.LE.Content.ContentObject.ModuleCO-86745 for the exam paper for ANZCA members

CMACE reports can be found here:
https://www.hqip.org.uk/resource/cmace-and-cemach-reports/#.X_ajPi8RrkI

An article on respiratory physiology in pregnancy
https://breathe.ersjournals.com/content/11/4/297

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