Document Detail

Clinical measures of gestational age in normal pregnancies.
MedLine Citation:
PMID:  6828273     Owner:  NLM     Status:  MEDLINE    
Obstetric findings in 89 healthy women were evaluated prospectively by one obstetrician unaware of menstrual history. With weekly examinations, fetal heart tones were audible by fetoscope at 17.1 +/- 1.1 weeks' gestation (mean +/- SD) and the fundus reached the umbilicus at 16.6 +/- 0.9 weeks. At 20 to 31 weeks, fundal height in centimeters equaled weeks' gestation (confidence interval: +/- 3 weeks). The accuracy of predicting delivery date from combined findings (SD: 11.4 days) approached that from reliable menstrual history (SD: 10.2 days). Gestational age at delivery minus the pediatric Dubowitz estimate was 0.4 +/- 1.7 weeks. Gestational age may be overestimated by up to six weeks by assuming that the fundus reaches the umbilicus or that fetal heart tones appear at 20 weeks. However, carefully derived obstetric estimates potentially may be more reliable than pediatric estimates.
J M Jimenez; J E Tyson; J S Reisch
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  61     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  1983 Apr 
Date Detail:
Created Date:  1983-04-21     Completed Date:  1983-04-21     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  438-43     Citation Subset:  AIM; IM    
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MeSH Terms
Delivery, Obstetric
Fetal Heart / physiology
Fetus / physiology
Gestational Age*
Heart Sounds
Prospective Studies
Uterus / anatomy & histology

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

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