| Ultrasound examination at 37 weeks' gestation in the prediction of pregnancy outcome: the value of cervical assessment. | |
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MedLine Citation:
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PMID: 14689532 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To examine the potential value of routine measurement of cervical length in singleton low-risk pregnancies at 37 weeks of gestation in the prediction of onset and outcome of labor. METHODS: Cervical length was measured by transvaginal sonography at 37 weeks in 1571 singleton low-risk pregnancies. Outcome measures were gestation at spontaneous onset of labor, post-term delivery, duration of labor and mode of delivery. RESULTS: The median cervical length at 37 weeks was 30 mm and there was a significant association between cervical length and gestation at delivery, which increased from a mean of 38 weeks for cervical length of 10 mm to 41 weeks for cervical length of 35 mm. The incidence of delivery after 40 weeks and 10 days was 296 (18.8%) and the incidence increased with cervical length at 37 weeks from 0% to 6%, 35% and 68% for respective cervical lengths of < 20, 21-30, 31-40 and 41-50 mm. In the pregnancies with spontaneous onset of labor the incidence of Cesarean section for failure to progress increased from 3.6% to 6.0%, 6.4% and 11.8% for cervical lengths of < 20, 21-30, 31-40 and 41-50 mm, respectively. In the pregnancies requiring induction for post-term the incidence of Cesarean section for failed induction or failure to progress increased from 7.5% to 20.1% to 25.0% for cervical lengths of 21-30, 31-40 and 41-50 mm, respectively. CONCLUSION: Measurement of cervical length at 37 weeks can define the likelihood of spontaneous delivery before 40 weeks and 10 days and the risk of Cesarean section in those requiring induction for prolonged pregnancy. |
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Authors:
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G Ramanathan; C Yu; E Osei; K H Nicolaides |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology Volume: 22 ISSN: 0960-7692 ISO Abbreviation: Ultrasound Obstet Gynecol Publication Date: 2003 Dec |
Date Detail:
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Created Date: 2003-12-22 Completed Date: 2004-03-30 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9108340 Medline TA: Ultrasound Obstet Gynecol Country: England |
Other Details:
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Languages: eng Pagination: 598-603 Citation Subset: IM |
Copyright Information:
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Copyright 2003 ISUOG. Published by John Wiley & Sons, Ltd. |
Affiliation:
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Harris Birthright Research Centre for Fetal Medicine, King's College Hospital Medical School, London, UK. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Cervix Uteri / anatomy & histology, ultrasonography* Cesarean Section Ethnic Groups Female Gestational Age Humans Labor, Induced Parity Pregnancy Pregnancy Outcome* Pregnancy, Prolonged Proportional Hazards Models Prospective Studies Ultrasonography, Prenatal* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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