Document Detail

The fetal head-symphysis distance: a simple and reliable ultrasound index of fetal station in labor.
MedLine Citation:
PMID:  23124698     Owner:  NLM     Status:  Publisher    
Objectives: To assess the reproducibility of a new sonographic index of fetal station in labor: the fetal head symphysis distance (HSD) using three-dimensional ultrasound, and its correlation with digital assessment of fetal head descent and with the angle of progression (AoP). Methods: Three dimensional (3D) ultrasound volumes were acquired from 47 nulliparous women in active labor following assessment of fetal head station with digital examination. The HSD (the distance between the lower edge pubic symphysis and the nearest point of the fetal skull) was measured independently by two operators in order to evaluate intra- and interobserver reproducibility. The correlation between HSD, angle of progression (AoP) and station was evaluated with regression analysis. Using 3D Tomographic Ultrasound Imaging (TUI) measurements of the HSD were obtained in different parasagittal planes to evaluate the influence of inaccurate alignment of the probe with the midline of the pelvis. Results: HSD showed high intra-observer (ICC 0.995; 95% CI 0.991-0.997) and inter-observer reliability (ICC 0.991; 95% CI 0.984-0.995). In addition, a high correlation was demonstrated between midsagittal and parasagittal HSD measurements.HSD showed significant negative correlation with both fetal head station and AoP. Conclusions:Fetal head-symphysis distance is a new simple and reliable method for the assessment of fetal head descent in labor. Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
Aly Youssef; Elisa Maroni; Antonio Ragusa; Francesca De Musso; Ginevra Salsi; Maria Teresa Iammarino; Alexandro Paccapelo; Nicola Rizzo; Gianluigi Pilu; Tullio Ghi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-5
Journal Detail:
Title:  Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology     Volume:  -     ISSN:  1469-0705     ISO Abbreviation:  Ultrasound Obstet Gynecol     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9108340     Medline TA:  Ultrasound Obstet Gynecol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
Department of Obstetrics and Gynecology, Sant'Orsola MalpighiUniversityHospital, University of Bologna, Bologna, Italy.
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