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

The Hall Effect01:30

The Hall Effect

3.9K
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting material. From a historical perspective, this experiment was the first to demonstrate that the charge carriers in most metals are negative.
3.9K

You might also read

Related Articles

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

Sort by
Same author

Predicting the duration of the first stage of spontaneous labor using a neural network.

The Journal of maternal-fetal medicine·1996
Same author

The antepartum patient. Sudden changes in central nervous system status and sensorium.

Obstetrics and gynecology clinics of North America·1995
Same author

Screening general obstetric populations for risk assessment. Who will need testing?

Clinics in perinatology·1994
Same author

Prenatal prediction of small- and large-for-gestational age neonates.

Journal of obstetric, gynecologic, and neonatal nursing : JOGNN·1992
Same author

Care in early pregnancy.

Early human development·1992
Same author

The effect of maternal bladder volume on fundal height measurements.

British journal of obstetrics and gynaecology·1989

Related Experiment Video

Updated: Jan 8, 2026

Author Spotlight: Advancing Labor Management Through Electromyometrial Imaging for Understanding Uterine Contractions
08:07

Author Spotlight: Advancing Labor Management Through Electromyometrial Imaging for Understanding Uterine Contractions

Published on: May 26, 2023

1.7K

Measuring cervical dilatation in human parturition using the Hall effect

T J Kriewall, B A Work

    Medical Instrumentation
    |January 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    A new instrument was developed to measure cervical dilatation during labor using a magnetic field. Clinical reliability is currently limited to 1-7 cm, requiring further improvements for comprehensive labor monitoring.

    More Related Videos

    Contractility Measurements of Human Uterine Smooth Muscle to Aid Drug Development
    07:56

    Contractility Measurements of Human Uterine Smooth Muscle to Aid Drug Development

    Published on: January 26, 2018

    17.1K
    Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo
    07:03

    Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo

    Published on: April 6, 2015

    10.2K

    Related Experiment Videos

    Last Updated: Jan 8, 2026

    Author Spotlight: Advancing Labor Management Through Electromyometrial Imaging for Understanding Uterine Contractions
    08:07

    Author Spotlight: Advancing Labor Management Through Electromyometrial Imaging for Understanding Uterine Contractions

    Published on: May 26, 2023

    1.7K
    Contractility Measurements of Human Uterine Smooth Muscle to Aid Drug Development
    07:56

    Contractility Measurements of Human Uterine Smooth Muscle to Aid Drug Development

    Published on: January 26, 2018

    17.1K
    Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo
    07:03

    Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo

    Published on: April 6, 2015

    10.2K

    Area of Science:

    • Biomedical Engineering
    • Obstetrics and Gynecology
    • Medical Instrumentation

    Background:

    • Continuous monitoring of cervical dilatation is crucial for assessing labor progress.
    • Existing methods for measuring cervical dilatation have limitations in accuracy and continuous application.
    • Understanding labor physiology requires precise, real-time data on cervical changes.

    Purpose of the Study:

    • To develop and evaluate a novel instrument for continuous measurement of cervical dilatation in human labor.
    • To assess the instrument's performance across the 1-10 cm cervical dilatation range.
    • To explore the potential of this technology in providing new insights into labor physiology.

    Main Methods:

    • Development of an instrument employing a magnetic field source and sensor attached to opposing cervical edges.
    • Utilization of two Hall generators to measure orthogonal magnetic field components, minimizing orientation effects.
    • Testing the instrument's measurement capabilities and clinical reliability throughout labor.

    Main Results:

    • The instrument successfully measures cervical dilatation within the 1-10 cm range.
    • Clinical reliability was consistently achieved between 1-7 cm.
    • Further technical improvements are needed to extend reliable measurement beyond 7 cm.

    Conclusions:

    • The developed magnetic-based instrument shows promise for continuous cervical dilatation monitoring.
    • Current limitations in clinical reliability necessitate further refinement of the device.
    • Integrating this measurement with intrauterine pressure monitoring can enhance understanding of labor dynamics.