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. 2022 Nov 5;44(6):1311–1318. doi: 10.1007/s00246-022-03038-0

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Absolute fetal blood flow and blood flow indexed to fetal weight. Blood flow versus fetal weight in the umbilical vein (top panel) and fetal descending aorta (bottom panel) for absolute flow volumes (left) and flow volumes indexed to fetal weight (right). Indexed blood flow volumes enable physiological comparisons between fetuses so as to study pathophysiology