Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
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Ultrasound Obstet Gynecol · Nov 2019
Influence of maternal characteristics and gestational age on hemodynamic indices: NICOM device-specific reference ranges.
To construct reference ranges for stroke volume, cardiac output and systemic vascular resistance (SVR) in normal pregnancy for the NICOM® device, and to explore associations between maternal characteristics and these hemodynamic variables. ⋯ This study presents device-specific reference ranges for stroke volume, cardiac output and SVR for the NICOM device in healthy pregnancy and describes the maternal characteristics that are associated with the values of these hemodynamic measurements. Studies using NICOM in pregnancy can use these ranges in order to evaluate observations relative to those expected in uncomplicated pregnancy conditional on maternal characteristics. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Ultrasound Obstet Gynecol · Oct 2019
Multicenter Study Comparative StudyDescent of fetal head during active pushing: secondary analysis of prospective cohort study investigating ultrasound examination before operative vaginal delivery.
To investigate if descent of the fetal head during active pushing is associated with duration of operative vaginal delivery, mode of delivery and neonatal outcome in nulliparous women with prolonged second stage of labor. ⋯ Minimal or no fetal head descent during active pushing was associated with longer duration of operative vaginal delivery and higher frequency of Cesarean section in nulliparous women with prolonged second stage of labor. © 2019 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of the International Society of Ultrasound in Obstetrics and Gynecology.
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Ultrasound Obstet Gynecol · Oct 2019
Comparative StudyHistory-indicated cervical cerclage in management of twin pregnancy.
Cervical cerclage, when performed in twin gestation, has been reported to be associated with poor outcome. However, the role of first-trimester history-indicated cerclage among women with a twin pregnancy and a history of preterm birth has not been evaluated. The aim of this study was to assess pregnancy outcomes among women with a twin pregnancy who underwent first-trimester history-indicated cervical cerclage compared with outcomes in those managed expectantly. ⋯ History-indicated cerclage performed in the first trimester, as compared with expectant management, in women with a twin pregnancy had an overall positive effect on pregnancy and neonatal outcomes. These findings suggest the need for adequate randomized trials on cerclage placement in this subset of women. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Ultrasound Obstet Gynecol · Aug 2019
Meta Analysis Comparative StudyRole of magnetic resonance imaging in fetuses with mild or moderate ventriculomegaly in the era of fetal neurosonography: systematic review and meta-analysis.
To report the rate of additional central nervous system (CNS) anomalies detected exclusively on prenatal magnetic resonance imaging (MRI) in fetuses diagnosed with isolated mild or moderate ventriculomegaly (VM) on ultrasound, according to the type of ultrasound protocol adopted (dedicated neurosonography vs standard assessment of the fetal brain), and to explore whether the diagnostic performance of fetal MRI in detecting such anomalies is affected by gestational age at examination and laterality and degree of ventricular dilatation. ⋯ In fetuses undergoing dedicated neurosonography, the rate of a CNS anomaly detected exclusively on MRI is lower than that reported previously. Early MRI has an excellent diagnostic performance in identifying additional CNS anomalies, although the findings from this review suggest that MRI performed in the third trimester may be associated with a better detection rate for some types of anomaly, such as cortical, white matter and intracranial hemorrhagic anomalies. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.