TITLE:
Sonopelvimetry: An Innovative Method for Early Prediction of Obstructed Labour
AUTHORS:
Yinon Gilboa, Emma Bertucci, Carlotta Cani, Maya Spira, Jigal Haas, Vincenzo Mazza, Reuven Achiron
KEYWORDS:
Foetal Head Station, Interspinous Diameter, Obstructed Labour, Sonopelvimetry
JOURNAL NAME:
Open Journal of Obstetrics and Gynecology,
Vol.4 No.13,
September
15,
2014
ABSTRACT: Aim: To evaluate an
innovative sonopelvimetry method for early prediction of obstructed labour.
Methods: A prospective study was conducted in two centers.GPS-based
sonopelvimetry, laborProTM(Trig
Medical Inc., Yoqneam Ilit, Israel) devise, was used prior to labour in
nulliparous women at 39 - 42 weeks gestation remote from labor. Maternal pelvic
parameters, including inter-iliac transverse diameter, obstetric conjugate and
interspinous diameter were evaluated. Fetal parameters included head station,
biparietal diameter and occipitofrontal diameter. Data on delivery and outcome
were collected from the electronic files. Results: The innovative use of
sonopelvimetry was applied to 154 consecutive women, none of the participants
complained of discomfort or complications observed. The mean time of
examination was 15 + 2 minutes. Mean time of examination to delivery interval
was 4.8 days (range 0 - 16 days). Small interspinous diameter and high head
station were the best predictors for obstructed labour. Analysis indicated 87%
sensitivity and 61% specificity for birth weight fetal head station and ISD
combined in predicting obstructed labour with an area under the curve of 0.77.
Conclusions: Our results indicate that GPS-basedsonopelvimetry combined with fetal
estimated weight is a valuable tool in the risk assessment of obstructed
labour. Parameters obtained by sonopelvimetry combined with birth weight may be
useful.