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Fig. 1 | BMC Pregnancy and Childbirth

Fig. 1

From: Improvements in fetal heart rate analysis by the removal of maternal-fetal heart rate ambiguities

Fig. 1

Maternal heart rate (MHR) baseline misinterpreted as a prolonged fetal heart rate (FHR) deceleration. Top: simultaneous recording of the last 45 min of the MHR (black), FHR (pink) and uterine contractions (UC) signals; Middle and Bottom: computer analysis before and after removal of MHR-FHR ambiguities. For computerized analysis of MHR tracings, a scale change (MHR + 50 beats per minute) was performed (last hour). After the removal of ambiguities, the FHR alarm changed from red to blue

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