Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Aug 3;4(8):67. doi: 10.3390/children4080067

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Umbilical venous partial pressure of oxygen and fetal hemoglobin during gestation. There is a linear decrease in the partial oxygen tension (PO₂) with a concomitant rise in fetal hemoglobin as gestation progresses, which maintains the oxygen content in the blood constant throughout gestation. In addition, replacing fetal hemoglobin with adult hemoglobin packed red cells increases fetal PO₂ by 4.8 mm Hg and maintains similar oxygen content. HbA: adult hemoglobin; HbF: fetal hemoglobin; PRBC: packed red blood cell. Data from [29] (Copyright Satyan Lakshminrusimha).