• Nathan S Fox, Michael Silverstein, Samuel Bender, Chad K Klauser, Daniel H Saltzman, and Andrei Rebarber.
• Maternal Fetal Medicine Associates, PLLC, New York, New York 10128, USA. nfox@mfmnyc.com
• Obstet Gynecol. 2010 Feb 1;115(2 Pt 1):229-33.

ObjectiveTo estimate neonatal morbidity and delivery outcomes according to planned mode of delivery in twin pregnancies with active second-stage management.MethodsThis was an historic cohort of twin pregnancies delivered in one practice between June 2005 and September 2009 using a strict protocol of second-stage management, including breech extraction of a second noncephalic twin and internal version of a nonengaged cephalic second twin followed by breech extraction. Primary outcome was a 5-minute Apgar score less than 7 for twin B. Secondary outcomes were 5-minute Apgar score less than 7 for twin A and 1-minute Apgar score less than 7 and arterial cord pH below 7.20 for each twin.ResultsA total of 287 twin pregnancies were included. There were 157 patients (54.7%) in the planned cesarean group and 130 patients (45.3%) in the planned vaginal delivery group. There was no significant difference in the rates of twin B having a 5-minute Apgar score lower than 7 or an arterial cord pH below 7.20. Among the patients in the planned vaginal delivery group, the cesarean delivery rate was 15.4%. No patients had a vaginal delivery of twin A followed by cesarean delivery of twin B. Among the patients in the planned vaginal delivery group, patients who had a successful vaginal delivery were more likely to be younger (31.56+/-6.6 compared with 36.88+/-6.1 years, P=.001) and were more likely to have a prior vaginal delivery (47.3% compared with 15.0%, P=.007).ConclusionPlanned vaginal delivery of twin pregnancies seems to be associated with neonatal outcomes similar to those with planned cesarean delivery. Active second-stage management is associated with good neonatal outcomes and a low risk of combined vaginal-cesarean delivery.Level Of EvidenceII.

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