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

Fetal cardiovascular function during prolonged magnesium sulfate tocolysis.

M Kamitomo1, H Sameshima, T Ikenoue

  • 1Department of Obstetrics and Gynecology, Kagoshima City Hospital, Kagoshima, Japan.

Journal of Perinatal Medicine
|December 29, 2000
PubMed
Summary

Prolonged magnesium sulfate treatment for preterm labor affects fetal cardiovascular function. While right ventricular function decreases, the fetus compensates by increasing left ventricular function to maintain cardiac output.

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

Magnesium sulphate and perinatal mortality and morbidity in very-low-birthweight infants born between 24 and 32 weeks of gestation in Japan.

European journal of obstetrics, gynecology, and reproductive biology·2016
Same author

Influenza 2014-2015 among pregnant Japanese women: primiparous vs multiparous women.

European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology·2016
Same author

Comparison of pregnancy outcomes between women with gestational diabetes and overt diabetes first diagnosed in pregnancy: a retrospective multi-institutional study in Japan.

Diabetes research and clinical practice·2014
Same author

An amino-terminal fragment of hemokinin-1 has an inhibitory effect on pruritic processing in rats.

Neuroscience·2013
Same author

Maternal IgG avidity, IgM and ultrasound abnormalities: combined method to detect congenital cytomegalovirus infection with sequelae.

Journal of perinatology : official journal of the California Perinatal Association·2013
Same author

Paediatric presentation and outcome of congenital protein C deficiency in Japan.

Haemophilia : the official journal of the World Federation of Hemophilia·2013

Area of Science:

  • Perinatology
  • Fetal Physiology
  • Cardiovascular Medicine

Background:

  • Magnesium sulfate is commonly used for tocolysis in preterm labor.
  • Its effects on fetal cardiovascular function require detailed evaluation.

Purpose of the Study:

  • To assess fetal cardiovascular parameters during prolonged magnesium sulfate tocolysis.
  • To understand the fetal circulatory adaptations to maternal hypermagnesemia.

Main Methods:

  • Fetal ultrasonographic examinations were conducted in 15 fetuses exposed to magnesium sulfate (Mg group).
  • A control group of 16 fetuses from normal pregnancies was used for comparison.
  • Fetal heart rate, middle cerebral artery pulsatility index, and ventricular fractional shortening were measured.

Related Experiment Videos

Main Results:

  • The Mg group exhibited lower fetal heart rate and middle cerebral artery pulsatility index compared to controls.
  • Right ventricular fractional shortening was reduced, while left ventricular fractional shortening was increased in the Mg group.
  • Tricuspid orifice blood flow was lower, but mitral orifice blood flow was higher in the Mg group.

Conclusions:

  • Fetuses undergoing prolonged magnesium sulfate tocolysis demonstrate altered cardiovascular function.
  • Despite depressed right ventricular function, cardiac output is maintained through enhanced left ventricular function.
  • These findings suggest distinct fetal intracardiac and peripheral circulatory patterns, particularly in the brain, compared to normal fetuses.