International Journal of Reproductive BioMedicine
Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences of Yazd
Vol. 15, No. 11, 2017, pp. 697-702
Bioline Code: rm17081
Full paper language: English
Document type: Research Article
Document available free of charge
International Journal of Reproductive BioMedicine, Vol. 15, No. 11, 2017, pp. 697-702
© Copyright 2017 - International Journal of Reproductive BioMedicine
Triage by cervical length sonographic measurements for targeted therapy in threatened preterm labor: A double blind randomized clinical trial|
Vafaei, Homeira; Rahimirad, Neda; Hosseini, Seyedeh Marjan; Kasraeian, Maryam; Asadi, Nasrin; Shahraki, Hadi Raeisi & Bazrafshan, Khadijeh
Background: Preterm labor and birth are associated with several neonatal
complications including respiratory distress syndrome and intraventricular
hemorrhage. Differentiating true and false labor pain is a dilemma to obstetricians.
Objective: To elucidate the role of cervical length measurement in prediction of birth
in pregnant women with threatened preterm labor.
Materials and Methods: In this double blind randomized clinical trial, 120 women
with gestational age <34 wk who presented painful uterine contractions randomly
assigned to undergo measurement of cervical length. Patients were registered in the
hospital and a unit number was given. Based on the unit numbers, patients were
randomly assigned to two groups using a computerized random digit generator. All
participants were managed accordingly (n=65) or to receive tocolysis as planned
(n=55). Tocolysis was prescribed when cervical length was <15 mm while those
with cervical length ≥15 mm were managed expectantly. Delivery within 7 days of
the presentation was the primary outcome.
Results: This RCT showed in case group, 78.9% of patient with cervical length <15
mm were delivered within 7 days and only 21.1% of them maintained their
pregnancy. Of those with cervical length ≥15 mm, only 15.2% were delivered within
the study period and the rest (84.8%) maintained their pregnancy (p<0.001).
Conclusion: “Our results indicate that in women who presented preterm labor
symptoms, cervical length measurement will result in decreased unnecessary
tocolytic treatment. Women with cervical length ≥15mm should not receive
tocolysis, however, withholding corticosteroid therapy in these patients needs further
Cervical length; Preterm labor; Tocolysis; Ultrasonography.
Alternative site location: http://www.ijrm.ir