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 Concept Videos

Fetal Circulation01:14

Fetal Circulation

5.0K
Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
5.0K
Development of the Oral Microbiota01:28

Development of the Oral Microbiota

62
The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...
62

You might also read

Related Articles

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

Sort by
Same author

A sustainable future for peritoneal dialysis: a patient survey on green nephrology.

Journal of nephrology·2026
Same author

Spatio-temporal patterns of neurodegenerative disease hospitalizations in mainland Portugal.

Frontiers in public health·2026
Same author

Use of intrapartum tocolysis in Europe: results from a cross-sectional survey.

European journal of obstetrics, gynecology, and reproductive biology·2026
Same author

Nutrient patterns in children with Attention-Deficit/Hyperactivity Disorder: a case-control study.

European child & adolescent psychiatry·2026
Same author

Response: National trends of episiotomy in non-instrumental vaginal deliveries (2013-2022): A multi-data source approach.

International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics·2025
Same author

Uterine rupture in pregnancy over 5 years: A retrospective descriptive study.

Women's health (London, England)·2025

Related Experiment Video

Updated: Apr 26, 2026

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
19:15

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale

Published on: August 25, 2014

90.5K

Fetal behavioral dynamics in cephalic versus breech presentations.

Hernâni Gonçalves1, Diogo Ayres-de-Campos, João Bernardes

  • 1Center for Research in Health Technologies and Information Systems (CINTESIS), Faculty of Medicine, University of Porto, Rua Dr. Plácido da Costa, s/n, 4200-450, Porto, Portugal. hernanigoncalves@med.up.pt.

Developmental Psychobiology
|July 31, 2014
PubMed
Summary

Fetal heart rate (FHR) analysis reveals differences in autonomic nervous system activity between cephalic and breech presentations. Breech fetuses show higher FHR and sympatho-vagal balance, indicating distinct neurodevelopmental trajectories.

Keywords:
breech presentationdevelopmententropyfetal behaviorheart ratespectral analysis

More Related Videos

External Cephalic Version: Is it an Effective and Safe Procedure?
08:49

External Cephalic Version: Is it an Effective and Safe Procedure?

Published on: June 6, 2020

15.4K
Instrumentation of Near-term Fetal Sheep for Multivariate Chronic Non-anesthetized Recordings
14:40

Instrumentation of Near-term Fetal Sheep for Multivariate Chronic Non-anesthetized Recordings

Published on: October 25, 2015

8.3K

Related Experiment Videos

Last Updated: Apr 26, 2026

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
19:15

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale

Published on: August 25, 2014

90.5K
External Cephalic Version: Is it an Effective and Safe Procedure?
08:49

External Cephalic Version: Is it an Effective and Safe Procedure?

Published on: June 6, 2020

15.4K
Instrumentation of Near-term Fetal Sheep for Multivariate Chronic Non-anesthetized Recordings
14:40

Instrumentation of Near-term Fetal Sheep for Multivariate Chronic Non-anesthetized Recordings

Published on: October 25, 2015

8.3K

Area of Science:

  • Perinatal Medicine
  • Neurodevelopmental Biology
  • Autonomic Nervous System Physiology

Background:

  • Fetal neurodevelopment significantly impacts postnatal perceptual and learning abilities.
  • Understanding fetal autonomic nervous system (ANS) dynamics is crucial for assessing neurodevelopmental status.
  • Fetal presentation (cephalic vs. breech) may influence neurodevelopmental pathways.

Purpose of the Study:

  • To investigate differences in autonomic nervous system and complexity dynamics of fetal heart rate (FHR) tracings.
  • To compare FHR complexity and ANS balance between fetuses in cephalic and breech presentations.
  • To explore potential neurodevelopmental implications associated with fetal presentation.

Main Methods:

  • Analysis of fetal heart rate (FHR) tracings from 27 singleton fetuses.
  • Matching fetuses by gestational age (37-40 weeks), weight, gender, and outcome.
  • Assessment of FHR complexity using entropy measures and sympatho-vagal balance via LF/(MF+HF) ratio.

Main Results:

  • Fetuses in breech presentation exhibited significantly higher mean FHR compared to cephalic presentations.
  • Breech fetuses demonstrated a higher LF/(MF+HF) ratio, indicating increased sympatho-vagal balance.
  • Lower entropy values were observed in breech presentations, signifying decreased FHR complexity and more active fetal behavioral states.

Conclusions:

  • Fetal presentation is associated with distinct patterns of autonomic nervous system activity and FHR complexity.
  • Findings suggest potential neurodevelopmental differences between cephalic and breech presenting fetuses.
  • Altered ANS dynamics in breech fetuses may reflect variations in fetal behavioral states and maturation.