Document Detail

Duration of labor. An analysis of influencing factors.
MedLine Citation:
PMID:  3176924     Owner:  NLM     Status:  MEDLINE    
9703 labors at Akershus Central Hospital during the period January 1979 to January 1984 were analysed to see which factors influenced the duration of labor. Median duration was 8.2 h for nulliparas, 5.3 h for multiparas. Parity greater than one had no influence on duration. Induced labors were 1.9 h (nulliparas) and 1.4 h (multiparas) shorter than those with spontaneous onset. Stepwise linear regression showed that duration of labor was positively correlated with the weight of the infant, duration of pregnancy, weight gain and prepregnant weight. It was negatively correlated with mother's height. Mother's age did not influence duration of labor. Occiput posterior presentation and extensions of the head prolonged labor in nulliparas, but not in multiparas, while breech presentation had no influence.
B I Nesheim
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta obstetricia et gynecologica Scandinavica     Volume:  67     ISSN:  0001-6349     ISO Abbreviation:  Acta Obstet Gynecol Scand     Publication Date:  1988  
Date Detail:
Created Date:  1988-11-02     Completed Date:  1988-11-02     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0370343     Medline TA:  Acta Obstet Gynecol Scand     Country:  SWEDEN    
Other Details:
Languages:  eng     Pagination:  121-4     Citation Subset:  IM    
Department of Obstetrics and Gynecology, Akershus Central Hospital, Nordbyhagen, Norway.
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MeSH Terms
Birth Weight
Body Height
Body Weight
Gestational Age
Labor Onset
Labor, Obstetric / physiology*
Time Factors

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