Abstract
AimThe aim of this study is to evaluate whether cervical length and morphology assessed by transvaginal ultrasound in women admitted in threatened labour, can predict preterm delivery prior to 34 weeks gestation.MethodOver a six‐month period, 25 women presenting with threatened preterm labour were prospectively recruited into the study. Women with ruptured membranes, chorioamnionitis or heavy vaginal bleeding requiring delivery were excluded. Transvaginal sonography for cervical length and morphology was performed shortly after admission. Demographic data, medical observations and interventions were recorded. Pregnancy outcomes were collected after delivery.ResultsThe mean gestation at recruitment was 27+4 weeks (range 21+°−32+6 weeks). 16% (4/25) of patients delivered before 34 weeks gestation. In the latter cases, the cervical lengths were all ≤ 25 mm and the interval between presentation and delivery was < 2 weeks. All pregnancies with a cervical length > 25 mm delivered after 34 weeks gestation.ConclusionTransvaginal ultrasound assessment of cervical length in women presenting with threatened preterm labour is useful in predicting the likelihood of preterm delivery. This investigation may be useful in optimising the management of these women and reducing the risks of unnecessary tocolysis in women that are unlikely to deliver preterm.
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