Cephalopelvic disproportion is associated with an altered uterine contraction shape in the active phase of labor

American Journal of Obstetrics and Gynecology
Janyne E AlthausKarin J Blakemore

Abstract

The purpose of this study was to determine if intrapartum contractions of a particular shape (rapid rise with slower return to baseline) are predictive of cephalopelvic disproportion (CPD). In an institutional review board (IRB)-approved study, cohorts of 100 women who underwent spontaneous vaginal delivery (SVD) and 100 who underwent cesarean section (C/S) for CPD or arrest of labor were consecutively identified between January 2004 and March 2005. Inclusion criteria included term, singleton pregnancies, nulliparity, and absence of fetal anomalies. One hour of interpretable electronic fetal monitoring (EFM) was obtained in active labor. Fall to rise (F:R) ratio was calculated by measuring the time for a contraction to return to its baseline from its peak ("fall") and the time for a contraction to rise to its peak ("rise"). The F:Rs were then averaged over the number of contractions. Data were analyzed using Student t test, Chi-square, and Fisher exact tests where appropriate. Maternal demographics are listed in Table I. The average F:R ratio was 1.55 for SVD versus 1.77 for C/S, a statistically significant difference (P = .00003). Analysis of variance revealed this difference persists when controlled for the potentially confou...Continue Reading

References

Mar 1, 1992·American Journal of Obstetrics and Gynecology·M A Morgan, G R Thurnau
Sep 1, 1986·American Journal of Obstetrics and Gynecology·M A MorganJ I Fishburne
Jul 1, 1983·European Journal of Obstetrics, Gynecology, and Reproductive Biology·J MandryG Pontonnier
Jun 1, 1982·Radiology·M P FederleC E Cann
Aug 1, 1994·The Australian & New Zealand Journal of Obstetrics & Gynaecology·A StockA M Chang
Nov 20, 1998·American Journal of Obstetrics and Gynecology·J E FergusonE Turkheimer
Jun 23, 2000·Clinical Obstetrics and Gynecology·J E Ferguson, C L Sistrom
Oct 24, 2000·Obstetrics and Gynecology·A R SizerJ Wiener
Jun 22, 2002·AJR. American Journal of Roentgenology·Stefan SpörriHenning Schneider

Citations

Dec 7, 2007·Journal of Perinatal Medicine·Petra C A M BakkerHerman P van Geijn
Sep 13, 2014·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·L HierschY Yogev
Jul 21, 2011·Journal of Obstetric, Gynecologic, and Neonatal Nursing : JOGNN·Michelle L MurrayGayle M Huelsmann
Apr 24, 2012·Journal of Clinical Nursing·Samira EbrahimzadehMohhamad T Shakeri
Feb 17, 2015·Acta Obstetricia Et Gynecologica Scandinavica·Ulla KorhonenSeppo Heinonen
Jan 6, 2009·American Journal of Obstetrics and Gynecology·Tammy Y EulianoRodney K Edwards
Feb 18, 2018·Archives of Gynecology and Obstetrics·Anat LavieA Aviram
Feb 28, 2019·American Journal of Human Biology : the Official Journal of the Human Biology Council·Nicole D S GrunstraPhilipp Mitteroecker
Jun 22, 2019·Journal of Obstetrics and Gynaecology : the Journal of the Institute of Obstetrics and Gynaecology·Maryam PourshiraziFateme Tara
Jun 2, 2020·Journal of Midwifery & Women's Health·Katherine J KisslerTeri L Hernandez
Jul 21, 2017·International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics·Wayne R Cohen

Related Concepts

Labor Onset
Uterine Contraction
Uterus
Nested Case-Control Studies
Tocograms
Cephalopelvic Disproportion

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Neural Activity: Imaging

Imaging of neural activity in vivo has developed rapidly recently with the advancement of fluorescence microscopy, including new applications using miniaturized microscopes (miniscopes). This feed follows the progress in this growing field.

The Tendon Seed Network

Tendons are rich in the extracellular matrix and are abundant throughout the body providing essential roles including structure and mobility. The transcriptome of tendons is being compiled to understand the micro-anatomical functioning of tendons. Discover the latest research pertaining to the Tendon Seed Network here.

Myocardial Stunning

Myocardial stunning is a mechanical dysfunction that persists after reperfusion of previously ischemic tissue in the absence of irreversible damage including myocardial necrosis. Here is the latest research.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Incretins

Incretins are metabolic hormones that stimulate a decrease in glucose levels in the blood and they have been implicated in glycemic regulation in the remission phase of type 1 diabetes. Here is the latest research.

Chromatin Regulation and Circadian Clocks

The circadian clock plays an important role in regulating transcriptional dynamics through changes in chromatin folding and remodelling. Discover the latest research on Chromatin Regulation and Circadian Clocks here.

Long COVID-19

“Long Covid-19” describes illness in patients who are reporting long-lasting effects of the SARS-CoV-19 infection, often long after they have recovered from acute Covid-19. Ongoing health issues often reported include low exercise tolerance and breathing difficulties, chronic tiredness, and mental health problems such as post-traumatic stress disorder and depression. This feed follows the latest research into Long Covid.

Spatio-Temporal Regulation of DNA Repair

DNA repair is a complex process regulated by several different classes of enzymes, including ligases, endonucleases, and polymerases. This feed focuses on the spatial and temporal regulation that accompanies DNA damage signaling and repair enzymes and processes.

Related Papers

International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics
L SpätlingA Hasenburg
© 2021 Meta ULC. All rights reserved