Last updated on February 2018

R. I. S. POS. T. A


Brief description of study

A failed operative vaginal delivery is associated with increased risk of maternal and perinatal complications. It is very important the determination of the fetal head position prior to instrumental delivery.

Generally,diagnosis of the fetal head position is made on transvaginal digital examination by delineating the suture lines of the fetal skull and the fontanelles. There is a paucity of studies on the accuracy of digital examination but the general consensus is that reproducibility is low and diagnostic uncertainty remains high even for operators with much experience.

As the traditional clinical evaluation has many limitations, a new tool capable of increasing diagnostic objectivity and accuracy would be of great interest.

The aim of our study was to evaluate, in a prospective study, if the complementary use of ultrasound scan, to diagnose the fetal head position prior to instrumental delivery, may play a role in labor outcome.

Clinical Study Identifier: NCT01991665

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Tullio Ghi

Department of Obstetrics and Gynecology, Sant'Orsola-Malpighi University Hospital, University of Bologna
Bologna, Italy
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Recruitment Status: Open


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