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. 2018 May 15;6:140. doi: 10.3389/fped.2018.00140

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Copyright © 2018 Singh and Tissot.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Schematic diagram showing events during transition of circulation: fetal to neonatal circulation. PVR, pulmonary vascular resistance; PBF, pulmonary blood flow; FO, foramen ovale; DA, ductus arteriosus; PaO₂, arterial partial pressure of oxygen; L, left; R, right; PG, prostaglandin.