Document Detail


Characteristics of normal labor.
MedLine Citation:
PMID:  2733947     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The length of the first and second stages of labor was evaluated in 6991 women with singleton gestations at 37-42 weeks with vertex presentation. All patients delivered spontaneously without the use of oxytocin. Four study groups were created based on parity and whether conduction anesthesia was used. The mean lengths and limits (95th percentile) for the first stage of labor, respectively, were as follows: nulliparas: no anesthesia--8.1 and 16.6 hours, conduction anesthesia--10.2 and 19.0 hours; multiparas: no anesthesia--5.7 and 12.5 hours, conduction anesthesia--7.4 and 14.9 hours. Similar data for the second stage were as follows: nulliparas: no anesthesia--54 and 132 minutes, conduction anesthesia--79 and 185 minutes; multiparas: no anesthesia--19 and 61 minutes, conduction anesthesia--45 and 131 minutes. These statistical parameters are useful for defining when a labor becomes abnormal and intervention should be considered.
Authors:
S J Kilpatrick; R K Laros
Related Documents :
9003947 - Obstetric outcome in uncomplicated prolonged pregnancy.
9475687 - Long-term magnesium sulfate tocolysis and maternal osteoporosis in a triplet pregnancy:...
9654537 - Lack of effect of walking on labor and delivery.
1872337 - The fetal-pelvic index: a method of identifying fetal-pelvic disproportion in women att...
22560117 - Placental adaptations to the maternal-fetal environment: implications for fetal growth ...
15669377 - Surveillance and behavioral investigations of aedes aegypti and aedes polynesiensis in ...
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  74     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  1989 Jul 
Date Detail:
Created Date:  1989-07-21     Completed Date:  1989-07-21     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  85-7     Citation Subset:  AIM; IM    
Affiliation:
Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Francisco.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Anesthesia, Conduction
Anesthesia, Obstetrical
Female
Humans
Labor Stage, First / physiology
Labor Stage, Second / physiology
Labor, Obstetric / physiology*
Parity
Pregnancy
Reference Values
Grant Support
ID/Acronym/Agency:
HD 13543/HD/NICHD NIH HHS
Comments/Corrections
Comment In:
Obstet Gynecol. 1989 Dec;74(6):973-4   [PMID:  2586966 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  The role of pelvic exenteration for sarcomatous malignancies.
Next Document:  Placental abruption in the preterm gestation: an association with chorioamnionitis.