Reference range for cervical length in twin pregnancies

Fujita, Mariza Marie; Brizot, Maria de Lourdes; Liao, Adolfo Wenjaw; Bernáth, Tatiana; Cury, Leonardo Fadel; Neto, Jorge Demétrio Banduki; Zugaib, Marcelo

doi:10.1034/j.1600-0412.2002.810910.x

Cited by 25 publications

(19 citation statements)

References 12 publications

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“…Preterm birth occurs in more than 50% of twin gestations . In São Paulo state, in 2012, twin pregnancies contributed for 14.80 and 11.8% of all deliveries prior to 32 and 36 weeks' gestation, respectively .…”

Section: Introductionmentioning

confidence: 99%

Prenatal administration of vaginal progesterone and frequency of uterine contractions in asymptomatic twin pregnancies

Oliveira

Brizot

Liao

et al. 2016

Acta Obstet Gynecol Scand

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Section: Introductionmentioning

confidence: 99%

Prenatal administration of vaginal progesterone and frequency of uterine contractions in asymptomatic twin pregnancies

Oliveira

Brizot

Liao

et al. 2016

Acta Obstet Gynecol Scand

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“…The values of canal length at 16-19 weeks' gestation in both singleton and non-tocolysis twin pregnancies are similar to other reports at the corresponding gestational age in singleton as well as twin pregnancies. 14,15,19 In cases of preterm delivery at <36 weeks and preterm labor in twin pregnancies, we observed a different pattern in canal length shortening, compared with non-tocolysis twin pregnancies as well as normal singleton pregnancies. The canal length in twin pregnancy with preterm labor and delivery at 16-19 weeks was significantly shorter than that of non-tocolysis twin pregnancies.…”

Section: Discussionmentioning

confidence: 69%

“…Our results are inconsistent with other reports, which demonstrated that canal length shortened linearly with advancing gestational age up to term. 15,16 This inconsistency may be due to the difference in analytical methods. In our study, the observational period of 16-35 weeks was stratified into five gestational age groups and comparisons were made between age groups, whereas other studies showed the relationship between canal length and gestational age by linear regression analysis.…”

Section: Discussionmentioning

confidence: 99%

Longitudinal changes in canal length at 16–35 weeks in normal twin pregnancies and twin pregnancies with preterm labor and delivery

Yoshizato

Inoue²,

Fukami³

et al. 2010

J of Obstet and Gynaecol

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“…In normal pregnancies, as gestational age increases, gradual reduction of cervical length can be observed (19)(20)(21)(22). Similar to twin pregnancies, polyhydramnios can lead to shortening of the cervix with uterine distension (7).…”

Section: Discussionmentioning

confidence: 99%

Maternal and Fetal Outcomes in Pregnant Women With Polyhydramnios Treated Based on Maternal and Fetal Distress and Preterm Delivery

Fardiazar¹,

Soltanpour²,

Ghatrehsamani³

2017

International Journal of Women’s Health and Reproduction Scienc

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IntroductionPolyhydramnios is a medical condition describing an excess of amniotic fluid in the amniotic sac which can be seen in 1%-2% of women. The overall prevalence of this condition is reported on 750 pregnancies. Patients suffered from polyhydramnios often referred to hospitals complaining about discomfort in the abdomen and respiratory distress. Abnormal magnitude of the uterus (compared to gestational age) along with difficulty touching embryonic organs and problems associated with fetus auscultation can be observed on physical examination. A definitive diagnosis is ultimately possible through ultrasound and by measuring the ammonic fluid index. Amniotic fluid index (AFI) more than 25 cm is considered as polyhydramnios, accordingly (1).Polyhydramnios may be associated with fetal and maternal complications such as respiratory distress, thromboembolism, preterm labor, atonic uterus, anemia, caesarean section, premature fetus, umbilical cord prolapse caused by the rupture of the membranes and fetal distress (2-4).Common treatment methods of polyhydramnios pregnancies include examination of maternal risk factors (diabetes, viral hepatitis, syphilis and other torch infections and addiction) and examination of fetal risk factors (hydrops fetalis, esophageal atresia, gastroschisis, anencephaly, diaphragmatic hernia, placental chorioangioma, severe anemia, heart problems and chromosomal abnormalities). In mild cases, simple control and follow-ups, continuous ultrasound and conservative treatment methods AbstractObjectives: Polyhydramnios is a condition that could be along with significant maternal, fetal and neonatal consequences. One of the most important complications of this condition is preterm labor and delivery of preterm neonates. Although in mild cases expectant conservative management is effective, in more severe cases, medications (such as indomethacin) and amnioreduction could be considered. Each one of these methods could be accompanied with complications. This study aims to examine the results of management of patients with polyhydramnios according to the fetal and maternal distress and preterm labor criteria. Materials and Methods: In this descriptive-analytic setting, 26 pregnant mothers with polyhydramnios (amniotic fluid index [AFI] more than 30) were managed according to the fetal and maternal distress and preterm labor criteria. In cases under 32 gestational weeks, indomethacin was used with an initial dose of 25 mg every 6 hours and a maximum dose of 2-3 mg/kg that was tapered when the AFI diminished. In refractory cases, the flowchart of fetal and maternal distress and preterm labor was employed. In pregnancies aged over 32 weeks, in case of maternal distress amnioreduction was performed, and in asymptomatic patients, cervical length, funneling, color Doppler and placental thickness were evaluated and in normal cases controlling was carried every 1-2 weeks and abnormal cases amnioreduction was carried out. Results: The mean age of studies patients was 28.12 ± 7.22 years and the mean pregnanc...

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Reference range for cervical length in twin pregnancies

Abstract: Cervical length shortens gradually throughout gestation in twin pregnancies.

Cited by 25 publications

References 12 publications

Prenatal administration of vaginal progesterone and frequency of uterine contractions in asymptomatic twin pregnancies

Prenatal administration of vaginal progesterone and frequency of uterine contractions in asymptomatic twin pregnancies

Longitudinal changes in canal length at 16–35 weeks in normal twin pregnancies and twin pregnancies with preterm labor and delivery

Maternal and Fetal Outcomes in Pregnant Women With Polyhydramnios Treated Based on Maternal and Fetal Distress and Preterm Delivery

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