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

Cardiac performance during pregnancy: serial evaluation using external systolic time intervals.

P R Liebson, L I Mann, M I Evans

    American Journal of Obstetrics and Gynecology
    |May 1, 1975
    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

    Cell-free fetal DNA screening in the USA: a cost analysis of screening strategies.

    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2014
    Same author

    Impact of nuchal translucency credentialing by the FMF, the NTQR or both on screening distributions and performance.

    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2011
    Same author

    Chlamydia trachomatis: a practical obstetric/gynecologic management approach.

    International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics·2010
    Same author

    Peeling back the onion on ultrasound abnormalities.

    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2009
    Same author

    Second-trimester sonographic soft markers: what can we learn from the experience of first-trimester nuchal translucency screening?

    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2008
    Same author

    Anxiety among women who have undergone fertility therapy and who are considering multifetal pregnancy reduction: trends and implications.

    The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians·2003

    This study shows that indirect systolic time intervals can track changes in left ventricular function during pregnancy in both normal and cardiac patients. These cardiac function changes may persist postpartum, indicating lasting effects on the heart.

    Area of Science:

    • Cardiology
    • Physiology
    • Obstetrics

    Background:

    • Pregnancy significantly alters cardiovascular function.
    • Assessing left ventricular function noninvasively during pregnancy is crucial.
    • Compensated cardiac conditions require careful monitoring during gestation.

    Purpose of the Study:

    • To evaluate serial changes in left ventricular function during pregnancy using indirect systolic time intervals.
    • To compare cardiac function changes between normal pregnant women and those with compensated cardiac conditions.
    • To determine if these cardiac changes persist postpartum.

    Main Methods:

    • Utilized indirect systolic time indices (LVET index, PEP index, PEP/LVET ratio, Q-S2 index).
    • Monitored 13 normal pregnant patients and 5 with compensated cardiac conditions.

    Related Experiment Videos

  • Conducted serial evaluations throughout pregnancy and into the postpartum period.

    • Main Results:

    • Both groups showed parallel changes: decreased LVET index, increased PEP index, and increased PEP/LVET ratio.
    • Q-S2 index decreased in normal pregnancy but was inconsistent in cardiac patients.
    • Systolic time intervals normalized by postpartum, but PEP and PEP/LVET remained elevated.
    • No significant intergroup differences were observed between normal and cardiac groups.

    Conclusions:

    • Indirect systolic time intervals offer a noninvasive method to assess cardiac function changes during pregnancy.
    • Observed changes suggest alterations in left ventricular contractility, preload, or afterload.
    • Persistent elevations in some indices postpartum indicate potential residual changes in intrinsic left ventricular function.
    • In compensated heart disease, indirect tests generally mirror changes seen in normal pregnancy.