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. 2025 Sep 5;15(3):e142–e145. doi: 10.1055/a-2689-2550

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The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. ( https://creativecommons.org/licenses/by/4.0/ )

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2 — Doppler study of the maternal right uterine artery (UA) for the presented case at 29 weeks of pregnancy. Peak systolic velocity (PSV), end-diastolic velocity (EDV), pulsatility index (PI), and systolic-to-diastolic ratio (S/D) values were obtained for the right UA. A white arrow indicates the reverse flow in the flow trace.