1. Electronic Fetal Heart Rate Monitoring with Intrauterine Fetal Demise
William N.P. Herbert, MD, Nancy N. Stuart, RN, BSN, Larry S. Butler, MD 
Journal of Obstetric, Gynecologic & Neonatal Nursing 
Volume 16, Issue 4, Pages (July 1987)
DOI: /j tb01581.x
Copyright © 1987 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions

2. Figure 1
Initial tracing after application of fetal scalp electrode. Beat-to-beat variability is present along with occasional spikes of aberrant electronic signals.
Journal of Obstetric, Gynecologic & Neonatal Nursing  , DOI: ( /j tb01581.x)
Copyright © 1987 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions

3. Figure 2 Heart rate tracing later during the course of labor.
Journal of Obstetric, Gynecologic & Neonatal Nursing  , DOI: ( /j tb01581.x)
Copyright © 1987 AWHONN, the Association of Women's Health, Obstetric and Neonatal Nurses Terms and Conditions