Planned early delivery versus expectant management for monoamniotic twins

Area of Science:

• Perinatology
• Maternal-Fetal Medicine
• Obstetrics

Background:

• Monoamniotic twin pregnancies, occurring in 1 in 10,000 births, share a single amniotic sac and face significant risks.
• Complications include cord entanglement, congenital anomalies, growth restriction, twin-to-twin transfusion syndrome, and increased perinatal mortality.
• Maternal risks encompass pre-eclampsia, anemia, and hemorrhage, necessitating careful management.

Purpose of the Study:

• To evaluate if routine early delivery improves fetal, neonatal, or maternal outcomes in monoamniotic twin pregnancies.
• To compare early delivery with expectant management, which involves awaiting spontaneous labor until 36-38 weeks gestation unless indicated otherwise.

Main Methods:

• A systematic search of the Cochrane Pregnancy and Childbirth Group's Trials Register was conducted.
• The review included published and unpublished randomized controlled trials comparing planned early delivery with planned term delivery or expectant management.
• No trials met the inclusion criteria for this review.

Main Results:

• The search strategy identified no randomized controlled trials for inclusion.
• Consequently, no data were available to analyze the comparative effectiveness of different delivery timings.

Conclusions:

• There is a lack of robust randomized controlled evidence to guide the optimal timing of delivery for monoamniotic twins.
• Management decisions should be informed by expert consensus, historical data, and the availability of neonatal intensive care.
• Further multicenter audits and research are essential to establish evidence-based guidelines and understand the implications of interventions.