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

Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when researchers try to extrapolate results...
Reduced Mass Coordinates: Isolated Two-body Problem01:12

Reduced Mass Coordinates: Isolated Two-body Problem

In classical mechanics, the two-body problem is one of the fundamental problems describing the motion of two interacting bodies under gravity or any other central force. When considering the motion of two bodies, one of the most important concepts is the reduced mass coordinates, a quantity that allows the two-body problem to be solved like a single-body problem. In these circumstances, it is assumed that a single body with reduced mass revolves around another body fixed in a position with an...
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Escape Velocity01:26

Escape Velocity

The escape velocity of an object is defined as the minimum initial velocity that it requires to escape the surface of another object to which it is gravitationally bound and never to return. For example, what would be the minimum velocity at which a satellite should be launched from the Earth's surface such that it just escapes the Earth's gravitational field?
To calculate the escape velocity, it is assumed that no energy is lost to any frictional forces. In practice, a satellite launched from...
Potential Energy due to Gravitation01:27

Potential Energy due to Gravitation

Since gravitational force is a conservative force, the amount of work done to move an object between two points in the gravitational field in which it resides is independent of the path taken. Thus, similar to the gravitational field, a gravitational potential energy function can be defined, which depends only on spatial coordinates.
Consider a mass gravitationally bound to another object. For example, the Earth is gravitationally bound to the Sun’s gravitational field. The potential energy of...
Inborn Errors of Metabolism01:20

Inborn Errors of Metabolism

Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...

You might also read

Related Articles

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

Sort by
Same author

Isolated Polyhydramnios: diagnosis should be made based on both elevated AFI and elevated MVP.

American journal of obstetrics & gynecology MFM·2026
Same author

The Influence of Hindsight and Outcome Bias on Fetal Heart Rate Interpretation and Judgments of Obstetric Care Quality.

American journal of perinatology·2026
Same author

Scientific Authorship Through the Lens of Parenthood.

BJOG : an international journal of obstetrics and gynaecology·2026
Same author

The association of sociodemographic differences with clinical management following a diagnosis of short cervix.

Pregnancy (Hoboken, N.J.)·2026
Same author

A model to predict red blood cell transfusion during/after cesarean delivery.

Pregnancy (Hoboken, N.J.)·2026
Same author

Blood Product Use for Hemorrhage during Cesarean Delivery.

American journal of perinatology·2026
Same journal

Association of Surgical Approach with Oncologic Outcomes in Low-Risk Cervical Cancer.

American journal of obstetrics and gynecology·2026
Same journal

Trends in Infertility Treatments by Race, Ethnicity, Socioeconomic Status, and Region in U.S. Birth Certificates from Live Births: 2011-2022.

American journal of obstetrics and gynecology·2026
Same journal

Likelihood ratios enhance clinical interpretation of metagenomic prediction of early-onset neonatal sepsis in preterm premature rupture of membranes (Letter-to-the-Editor).

American journal of obstetrics and gynecology·2026
Same journal

Taking risk stratification in preterm premature rupture of membranes to the bedside (Reply to Letter-to-the-Editor).

American journal of obstetrics and gynecology·2026
Same journal

Gestational Age at Full-Term Delivery and Long-Term Offspring Morbidity in Low-Risk Pregnancies: A Population-Based Cohort Study.

American journal of obstetrics and gynecology·2026
Same journal

Trajectories of childbirth-related posttraumatic stress symptoms after a vaginal delivery: a multicenter prospective study.

American journal of obstetrics and gynecology·2026
See all related articles

Related Experiment Video

Updated: May 31, 2026

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats
07:36

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats

Published on: November 20, 2015

Late preterm births: irreducible because E = mc2.

Suneet P Chauhan1

  • 1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Eastern Virginia Medical Center, Norfolk, VA, USA.

American Journal of Obstetrics and Gynecology
|July 15, 2011
PubMed
Summary
This summary is machine-generated.

Late preterm births, occurring between 34-36 weeks, are rising and linked to higher infant mortality and morbidity. While reducing these births is important, more evidence is needed to confirm if extending pregnancies improves outcomes.

More Related Videos

A Rat Model of Mild Intrauterine Hypoperfusion with Microcoil Stenosis
06:19

A Rat Model of Mild Intrauterine Hypoperfusion with Microcoil Stenosis

Published on: January 7, 2018

Transcutaneous Microcirculatory Imaging in Preterm Neonates
06:27

Transcutaneous Microcirculatory Imaging in Preterm Neonates

Published on: December 31, 2015

Related Experiment Videos

Last Updated: May 31, 2026

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats
07:36

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats

Published on: November 20, 2015

A Rat Model of Mild Intrauterine Hypoperfusion with Microcoil Stenosis
06:19

A Rat Model of Mild Intrauterine Hypoperfusion with Microcoil Stenosis

Published on: January 7, 2018

Transcutaneous Microcirculatory Imaging in Preterm Neonates
06:27

Transcutaneous Microcirculatory Imaging in Preterm Neonates

Published on: December 31, 2015

Area of Science:

  • Neonatal Medicine
  • Obstetrics
  • Public Health

Background:

  • Late preterm birth (34-36 weeks) is increasingly common, affecting 8% of singletons and 35% of multiple gestations.
  • This birth timing is associated with significantly higher rates of respiratory distress, pneumonia, and mortality compared to full-term births.

Purpose of the Study:

  • To analyze the trends and outcomes associated with late preterm births.
  • To evaluate the necessity and potential risks of interventions aimed at reducing late preterm birth rates.

Main Methods:

  • Analysis of epidemiological data on birth timing and associated neonatal outcomes.
  • Review of existing evidence on the impact of prolonging late preterm pregnancies.

Main Results:

  • Late preterm births have increased by 15% between 1992 and 2002.
  • Newborns delivered late preterm exhibit increased morbidity and mortality risks compared to those born at 39 weeks.

Conclusions:

  • Reducing late preterm birth rates is a public health priority due to associated risks.
  • Caution is advised regarding interventions to prolong pregnancies, as evidence for improved maternal-fetal outcomes is currently insufficient.