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Fig. 3 | BMC Pregnancy and Childbirth

Fig. 3

From: Unrecognized maternal heart rate artefact in cases of perinatal mortality reported to the United States Food and Drug Administration from 2009 to 2019: a critical patient safety issue

Fig. 3

Illustrates coincidence between the maternal heart rate (faint line) and presumed fetal heart rate. After application of a fetal scalp electrode, the true fetal heart rate becomes apparent. Reprinted from American Journal of Obstetrics and Gynecology, https://www.sciencedirect.com/journal/american-journal-of-obstetrics-and-gynecology, Vol 198, Issue 6, June 2008, Pages 717–24, Neilson DR, Freeman RK, Mangan S. Signal ambiguity resulting in unexpected outcome with external fetal heart rate monitoring.© 2008, with permission from Elsevier

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