Document Detail

Evaluation of the labor curve in nulliparous Japanese women.
MedLine Citation:
PMID:  20494329     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: We sought to compare Japanese nulliparous labor progression with Friedman's classic 1955 curve and Zhang's 2002 curve. STUDY DESIGN: We developed a labor curve using retrospective record reviews of 2369 Japanese nulliparas, at term, spontaneous labor onset and singleton vertex deliveries of normal birth weight infants. RESULTS: The new Japanese Suzuki-Horiuchi labor curve with slower cervical dilation in the active phase was like Zhang's and differed from Friedman's curve. Labor length was approximately 5 hours occurring between 4-10 cm compared with Friedman's 2.5 hours and Zhang's 5.5 hours. Even at 10-cm dilation, labor lasted >2 hours at the 95th percentile of time interval. CONCLUSION: Similar to Zhang's curve, the Suzuki-Horiuchi curve was smooth and more gradually sloped than Friedman's curve. Appraise "arrested or protracted labor" with these slower labor curves in mind using Friedman's curve cautiously.
Ritsuko Suzuki; Shigeko Horiuchi; Hiroshi Ohtsu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-05-21
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  203     ISSN:  1097-6868     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-06     Completed Date:  2010-09-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  226.e1-6     Citation Subset:  AIM; IM    
Copyright Information:
Copyright 2010 Mosby, Inc. All rights reserved.
Department of Nursing, Kyorin University Hospital, Tokyo, Japan.
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MeSH Terms
Drug Utilization
Extraction, Obstetrical / statistics & numerical data
Labor, Obstetric*
Maternal Age
Oxytocics / therapeutic use
Oxytocin / therapeutic use
Retrospective Studies
Time Factors
Young Adult
Reg. No./Substance:
0/Oxytocics; 50-56-6/Oxytocin

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

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