Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Variable fetal heart rate decelerations and electrocortical activities

Y Murata1, E J Quilligan, Y Ninomiya

  • 1Department of Obstetrics and Gynecology, University of California, Irvine, School of Medicine, Orange, California.

American Journal of Obstetrics and Gynecology
|February 1, 1994
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Risk factors in patients treated with surgical drainage for rhinogenic intracranial complications: a nationwide study.

Rhinology·2025
Same author

Guideline adherence by physicians for management of glucocorticoid-induced osteoporosis in Japan: a nationwide health insurance claims database study.

Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·2022
Same author

Effects of royal jelly on bone metabolism in postmenopausal women: a randomized, controlled study.

Climacteric : the journal of the International Menopause Society·2020
Same author

Estimates of hip fracture incidence in Japan using the National Health Insurance Claim Database in 2012-2015.

Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·2019
Same author

Royal jelly does not prevent bone loss but improves bone strength in ovariectomized rats.

Climacteric : the journal of the International Menopause Society·2018
Same author

Lymphoepithelioma-like carcinoma of the uterine cervix: a case report.

European journal of gynaecological oncology·2018

Fetal behavioral states significantly impact variable fetal heart rate decelerations during umbilical cord occlusion. These heart rate changes are more pronounced during high-voltage electrocorticogram states.

Area of Science:

  • Perinatal physiology
  • Fetal neurobiology

Background:

  • Fetal heart rate patterns provide insights into fetal well-being.
  • Fetal behavioral states, characterized by electrocorticogram (ECG) activity, are known to influence autonomic function.

Purpose of the Study:

  • To investigate how different fetal behavioral states affect baroreflex-mediated variable fetal heart rate decelerations.
  • To understand the relationship between electrocorticogram (ECG) states and fetal heart rate (FHR) responses to umbilical cord occlusion.

Main Methods:

  • Utilized chronically instrumented fetal lambs for continuous monitoring.
  • Applied intermittent partial umbilical cord occlusion for 1 minute every 3 minutes over 2 hours.
  • Recorded fetal heart rate (via ECG) and behavioral states (via electrocorticogram).

Related Experiment Videos

Main Results:

  • Fetal lambs demonstrated distinct low- and high-voltage electrocorticogram states.
  • Variable fetal heart rate decelerations were significantly deeper and wider during high-voltage electrocorticogram states compared to low-voltage states.

Conclusions:

  • Fetal behavioral states demonstrably influence the amplitude and duration of variable fetal heart rate decelerations.
  • These findings highlight the importance of considering fetal behavioral state when interpreting fetal heart rate responses to stressors.