Document Detail

Computational modeling approach to study the effects of fetal head flexion during vaginal delivery.
MedLine Citation:
PMID:  20478549     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The purpose of this study was to investigate the influence of fetal head flexion during vaginal delivery with a 3-dimensional computational finite element model. STUDY DESIGN: A finite element model of the pelvic skeletal structure, pelvic floor, and fetus was developed. The movements of the fetus during birth were simulated in engagement, descent, flexion, internal rotation, and extension of the fetal head. The opposite forces against the fetal descendent and the stress of the pelvic floor muscles were obtained on simulations with different degrees of head flexion. RESULTS: The simulated increase in fetal head flexion is associated with lower values of opposite forces against the fetal descent. The descending fetus with abnormal head flexion also meets resistance in later stations. Lower stress on the pelvic floor was demonstrated with simulated increase in fetal head flexion during vaginal delivery. CONCLUSION: This analytic evidence suggests that the fetal head flexion during vaginal delivery may facilitate birth and protect the pelvic floor.
Marco P Parente; Renato M Natal Jorge; Teresa Mascarenhas; António A Fernandes; Agnaldo L Silva-Filho
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-05-15
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:  217.e1-6     Citation Subset:  AIM; IM    
Copyright Information:
Copyright 2010 Mosby, Inc. All rights reserved.
Institute of Mechanical Engineering, Faculty of Engineering, University of Porto, Oporto, Portugal.
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MeSH Terms
Computer Simulation*
Delivery, Obstetric
Fetus / physiology*
Finite Element Analysis
Head Movements / physiology*
Models, Biological*
Parturition / physiology
Pelvic Floor / physiology

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