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How reliable is the determination of cervical dilation? Comparison of vaginal examination with spatial position-tracking ruler.

Abstract：

OBJECTIVE:The purpose of this study was to evaluate the accuracy of clinical measurement of cervical dilation with a position-tracking system during vaginal examination. STUDY DESIGN:This prospective study that was conducted in Poissy, France, Brooklyn, NY, and Haifa, Israel, included 333 measurements that were performed in 188 women with term singleton vertex uncomplicated pregnancies during the active stage of labor. Ninety measurements with clinical diagnosis of full dilation were excluded from analysis. Measurements were performed with a sensor attached to the midwife's index fingertip and a position-tracking system that was based on a low magnetic field. Evaluations were done when cervical examinations were clinically indicated. RESULTS:Results were similar in all centers. Mean error was 10.2 +/- 8.4 mm and ranged from 7.5 +/- 7.3 mm, when cervical dilation was > 8 cm, to 12.5 +/- 8.7 mm when cervical dilation was between 6.1 and 8 cm. CONCLUSION:This first evaluation of cervical assessment accuracy during vaginal examination with a position-tracking system shows limited precision.

journal_name

Am J Obstet Gynecol

journal_title

American journal of obstetrics and gynecology

authors

Nizard J,Haberman S,Paltieli Y,Gonen R,Ohel G,Nicholson D,Ville Y

doi

10.1016/j.ajog.2009.01.002

subject

Has Abstract

pub_date

2009-04-01 00:00:00

pages

402.e1-4

issue

4

eissn

0002-9378

issn

1097-6868

pii

S0002-9378(09)00008-8

journal_volume

200

pub_type

杂志文章

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