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Chapter 2 - Fetal Physiology

Published online by Cambridge University Press:  27 July 2023

By
Helen Perry  and
Asma Khalil
Edited by
Asma Khalil  and
Anthony Griffiths
Asma Khalil
Affiliation:
St George's University of London
Anthony Griffiths
Affiliation:
University Hospital of Wales, Cardiff
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Summary

Before birth, the pulmonary circulation is at high resistance owing to compression of the capillaries by collapsed lung and the vasoactive effects of the low PO2. Conversely, systemic circulation is at low resistance owing to the large placental bed. These factors, along with the presence of shunts, allow blood to be diverted from the lungs to the placenta.

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Chapter
Information
Part 1 MRCOG Synoptic Revision Guide , pp. 12 - 20
Publisher: Cambridge University Press
Print publication year: 2023

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References

Further Reading

Chapter 32: Fetal Physiology. MRCOG Part One. Fiander and Thilaganathan. RCOG 2010.Google Scholar
Oxford Handbook of Neonatology. Fox, Hoque, Watts. Oxford University Press 2010.Google Scholar
NICE Intrapartum Care Guidance 2014.Google Scholar

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