+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Gestational age at delivery and neonatal outcome in uncomplicated twin pregnancies: what is the optimal gestational age for delivery according to chorionicity?



Gestational age at delivery and neonatal outcome in uncomplicated twin pregnancies: what is the optimal gestational age for delivery according to chorionicity?



Obstetrics and Gynecology Science 59(1): 9-16



To investigate the neonatal outcome according to the gestational age at delivery and to determine the optimal timing for delivery in uncomplicated monochorionic and dichorionic twin pregnancies. This is a retrospective cohort study of women with uncomplicated twin pregnancies delivered at or beyond 35 weeks of gestation from 1995 to 2013. The primary outcome was neonatal composite morbidity, which was defined as when either one or both twins have one or more of the followings: fetal death after 35 weeks gestation, admission to neonatal intensive care unit, mechanical ventilator requirement, respiratory distress syndrome and neonatal death. To determine the optimal gestational age for delivery according to chorionicity, we compared the neonatal composite morbidity rate between women who delivered and women who remained undelivered at each gestational week in both monochorionic and dichorionic twin pregnancies. A total of 697 twin pregnancies were included (171 monochorionic and 526 dichorionic twins). The neonatal composite morbidity rate significantly decreased with advancing gestational age at delivery and its nadir was observed at 38 and ≥39 weeks of gestation in monochorionic and dichorionic twins, respectively. However, the composite morbidity rate did not differ between women who delivered and women who remained undelivered ≥36 and ≥37 weeks in monochorionic and dichorionic twins, respectively. Our data suggest that the optimal gestational age for delivery was at ≥36 and ≥37 weeks in uncomplicated monochorionic and dichorionic twin pregnancies, respectively.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 057940405

Download citation: RISBibTeXText

PMID: 26866030

DOI: 10.5468/ogs.2016.59.1.9


Related references

Perinatal complications in twin pregnancies after 34 weeks: effects of gestational age at delivery and chorionicity. American Journal of Perinatology 30(7): 545-550, 2013

Mode of delivery and neonatal outcome in uncomplicated monochorionic twin pregnancies. Journal of Maternal-Fetal and Neonatal Medicine 25(12): 2721-2724, 2012

Optimal gestational age of delivery to decrease neonatal morbidity in preterm pregnancies in Korea. Journal of Obstetrics and Gynaecology Research 37(6): 563-570, 2011

Current concepts of optimal gestational age for delivery based on gestational age associated risks of fetal and neonatal death. American Journal of Obstetrics and Gynecology 209(6): 595, 2013

The effect of mode of delivery and gestational age on neonatal outcome of the non-cephalic-presenting second twin. American Journal of Obstetrics and Gynecology 187(5): 1356-1361, 2002

Delivery and feto-neonatal outcomes of diamniotic twin pregnancies in women with no chronic disease or gestational complications: impact of mode of conception. Journal of Maternal-Fetal and Neonatal Medicine 2019: 1-8, 2019

Perinatal mortality and neonatal morbidity rates among twin pairs at different gestational ages: optimal delivery timing at 37 to 38 weeks' gestation. American Journal of Obstetrics and Gynecology 184(3): 451-458, 2001

Racial disparities in gestational age at delivery among twin pregnancies. American Journal of Obstetrics and Gynecology 216(1): S100-S101, 2017

Racial Disparities in Delivery Gestational Age among Twin Pregnancies. American Journal of Perinatology 34(11): 1065-1071, 2017

Risk factors for cesarean delivery and adverse neonatal outcome in twin pregnancies attempting vaginal delivery. Acta Obstetricia et Gynecologica Scandinavica 97(7): 845-851, 2018

Neonatal outcomes of twin pregnancies delivered at late-preterm versus term gestation based on chorionicity and indication for delivery. Journal of Perinatal Medicine 44(8): 903-911, 2016

What is the optimal gestational age for twin delivery. Bmc Pregnancy and Childbirth 6: 3, 2006

Optimal gestational age for twin delivery. Journal of Perinatology 20(4): 231-234, 2000

Neonatal outcome in cesarean section under general anesthesia, related to gestational age, induction-delivery and uterus-delivery intervals. Israel Journal of Medical Sciences 19(12): 1059-1063, 1983

Neonatal Outcome in Cesarean Section under General Anesthesia, Related to Gestational Age, Induction-Delivery and Uterus-Delivery Intervals. Obstetric and Gynecologic Survey 39(9): 575-576, 1984