Association between ultrasound‐based assessment of fetal head station and clinically assessed cervical dilatation
Objectives To describe the association between ultrasound‐based determination of fetal head station and clinical assessment of cervical dilatation during active labor. Methods From 427 women with singleton uncomplicated term pregnancies we obtained, during the active phase of labor, 907 pairs of mea...
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| Published in: | Ultrasound in obstetrics & gynecology Vol. 37; no. 6; pp. 709 - 711 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Chichester, UK
John Wiley & Sons, Ltd
01-06-2011
Wiley Wiley Subscription Services, Inc |
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| Abstract | Objectives
To describe the association between ultrasound‐based determination of fetal head station and clinical assessment of cervical dilatation during active labor.
Methods
From 427 women with singleton uncomplicated term pregnancies we obtained, during the active phase of labor, 907 pairs of measurements. Fetal head station and position were determined using the LaborPro system, based on position tracking and ultrasound imaging technology, and degree of cervical dilatation was determined by digital vaginal examination. The association between them was analyzed.
Results
The overall correlation between cervical dilatation and fetal head station was 0.64 (P < 0.001). Complete dilatation was observed in 78% of women with fetal head engagement, and in all women with a fetal head station of + 1.5 or more.
Conclusions
There is good association between non‐invasive ultrasound‐based determination of fetal head station and clinically assessed cervical dilatation. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd. |
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| AbstractList | To describe the association between ultrasound-based determination of fetal head station and clinical assessment of cervical dilatation during active labor.
From 427 women with singleton uncomplicated term pregnancies we obtained, during the active phase of labor, 907 pairs of measurements. Fetal head station and position were determined using the LaborPro system, based on position tracking and ultrasound imaging technology, and degree of cervical dilatation was determined by digital vaginal examination. The association between them was analyzed.
The overall correlation between cervical dilatation and fetal head station was 0.64 (P < 0.001). Complete dilatation was observed in 78% of women with fetal head engagement, and in all women with a fetal head station of + 1.5 or more.
There is good association between non-invasive ultrasound-based determination of fetal head station and clinically assessed cervical dilatation. OBJECTIVESTo describe the association between ultrasound-based determination of fetal head station and clinical assessment of cervical dilatation during active labor.METHODSFrom 427 women with singleton uncomplicated term pregnancies we obtained, during the active phase of labor, 907 pairs of measurements. Fetal head station and position were determined using the LaborPro system, based on position tracking and ultrasound imaging technology, and degree of cervical dilatation was determined by digital vaginal examination. The association between them was analyzed.RESULTSThe overall correlation between cervical dilatation and fetal head station was 0.64 (P < 0.001). Complete dilatation was observed in 78% of women with fetal head engagement, and in all women with a fetal head station of + 1.5 or more.CONCLUSIONSThere is good association between non-invasive ultrasound-based determination of fetal head station and clinically assessed cervical dilatation. Objectives To describe the association between ultrasound-based determination of fetal head station and clinical assessment of cervical dilatation during active labor. Methods From 427 women with singleton uncomplicated term pregnancies we obtained, during the active phase of labor, 907 pairs of measurements. Fetal head station and position were determined using the LaborPro system, based on position tracking and ultrasound imaging technology, and degree of cervical dilatation was determined by digital vaginal examination. The association between them was analyzed. Results The overall correlation between cervical dilatation and fetal head station was 0.64 (P < 0.001). Complete dilatation was observed in 78% of women with fetal head engagement, and in all women with a fetal head station of + 1.5 or more. Conclusions There is good association between non-invasive ultrasound-based determination of fetal head station and clinically assessed cervical dilatation. Objectives To describe the association between ultrasound‐based determination of fetal head station and clinical assessment of cervical dilatation during active labor. Methods From 427 women with singleton uncomplicated term pregnancies we obtained, during the active phase of labor, 907 pairs of measurements. Fetal head station and position were determined using the LaborPro system, based on position tracking and ultrasound imaging technology, and degree of cervical dilatation was determined by digital vaginal examination. The association between them was analyzed. Results The overall correlation between cervical dilatation and fetal head station was 0.64 (P < 0.001). Complete dilatation was observed in 78% of women with fetal head engagement, and in all women with a fetal head station of + 1.5 or more. Conclusions There is good association between non‐invasive ultrasound‐based determination of fetal head station and clinically assessed cervical dilatation. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd. Objectives To describe the association between ultrasound-based determination of fetal head station and clinical assessment of cervical dilatation during active labor. Methods From 427 women with singleton uncomplicated term pregnancies we obtained, during the active phase of labor, 907 pairs of measurements. Fetal head station and position were determined using the LaborPro system, based on position tracking and ultrasound imaging technology, and degree of cervical dilatation was determined by digital vaginal examination. The association between them was analyzed. Results The overall correlation between cervical dilatation and fetal head station was 0.64 (P < 0.001). Complete dilatation was observed in 78% of women with fetal head engagement, and in all women with a fetal head station of + 1.5 or more. Conclusions There is good association between non-invasive ultrasound-based determination of fetal head station and clinically assessed cervical dilatation. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd. [PUBLICATION ABSTRACT] |
| Author | Gonen, R. Haberman, S. Paltieli, Y. Ville, Y. Nizard, J. Ohel, G. |
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| Keywords | Sonography Head Gynecology Vagina Uterine cervix Labor fetal head station Obstetrics Pregnancy cervical dilatation vaginal examination Dilatation Fetus Clinical investigation Delivery LaborPro Ultrasound |
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| References_xml | – volume: 200 start-page: 402.e1 year: 2009 end-page: e4 article-title: How reliable is the determination of cervical dilation? Comparison of vaginal examination with spatial position‐tracking ruler publication-title: Am J Obstet Gynecol – volume: 177 start-page: 1024 year: 1997 end-page: 1029 article-title: International Multicentre Term Prelabor Rupture of Membranes Study: evaluation of predictors of clinical chorioamnionitis and postpartum fever in patients with prelabor rupture of membranes at term publication-title: Am J Obstet Gynecol – volume: 200 start-page: 404.e1 year: 2009 end-page: 5 article-title: Determination of fetal head station and position during labor: a new technique that combines ultrasound and a position‐tracking system publication-title: Am J Obstet Gynecol – volume: 161 start-page: 562 year: 1989 end-page: 566 article-title: Risk factors for intraamniotic infection: a prospective epidemiologic study publication-title: Am J Obstet Gynecol – volume: 192 start-page: 868 year: 2005 end-page: 874 article-title: Birth simulator: reliability of transvaginal assessment of fetal head station as defined by the American College of Obstetricians and Gynecologists classification publication-title: Am J Obstet Gynecol – volume: 35 start-page: 654 year: 2009 end-page: 659 article-title: Relations between fetal head descent and cervical dilatation during individual uterine contractions in the active stage of labor publication-title: J Obstet Gynaecol Res – volume: 6 start-page: 567 year: 1955 end-page: 589 article-title: Primigravid labor: a graphicostastistical analysis publication-title: Obstet Gynecol – volume: 64 start-page: 135 year: 1999 end-page: 139 article-title: Mathematical relationships between uterine contractions, cervical dilatation, descent and rotation in spontaneous vertex deliveries publication-title: Int J Gynaecol Obstet – ident: e_1_2_5_2_2 doi: 10.1097/00006250-195512000-00001 – ident: e_1_2_5_3_2 doi: 10.1016/j.ajog.2009.01.002 – ident: e_1_2_5_6_2 doi: 10.1016/S0002-9378(97)70007-3 – ident: e_1_2_5_8_2 doi: 10.1111/j.1447-0756.2008.00996.x – ident: e_1_2_5_5_2 doi: 10.1016/0002-9378(89)90356-6 – ident: e_1_2_5_4_2 doi: 10.1016/j.ajog.2004.09.028 – ident: e_1_2_5_7_2 doi: 10.1016/j.ajog.2008.10.051 – ident: e_1_2_5_9_2 doi: 10.1016/S0020-7292(98)00251-3 |
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| SubjectTerms | Biological and medical sciences cervical dilatation Delivery. Postpartum. Lactation Female fetal head station Fetuses Gynecological Examination - methods Gynecology Gynecology. Andrology. Obstetrics Head Humans imaging labor Labor Presentation Labor Stage, First - physiology Labor, Obstetric - physiology LaborPro Medical sciences Obstetrics Pregnancy Ultrasonography, Prenatal - methods Ultrasound Vagina vaginal examination |
| Title | Association between ultrasound‐based assessment of fetal head station and clinically assessed cervical dilatation |
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