Why the study?
Does supine positioning alter maternal hemodynamics and cardiac output in late pregnancy compared to the left lateral decubitus position?
Population
12 women with singleton pregnancies between 35- and 38-week gestation
Comparison
Supine positioning during magnetic resonance… vs Left lateral decubitus positioning during…
Design
Cross-sectional
Authors
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Supine positioning may compromise maternal cardiac output in late pregnancy; leaves open need for prospective trials before changing positioning guidance.
Does supine positioning alter maternal hemodynamics and cardiac output in late pregnancy compared to the left lateral decubitus position?
Supine positioning in late pregnancy significantly reduces cardiac output and aortic blood flow while increasing collateral venous flow through the azygos vein due to IVC compression.
Humphries et al. (2018) studied this question.
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