Twin reverse arterial perfusion: Timing of intervention

Area of Science:

• Maternal-Fetal Medicine
• Twin Gestation Complications
• Fetal Surgery

Background:

• Twin reverse arterial perfusion (TRAP) sequence is a severe anomaly in monochorionic twins.
• It involves an acardiac twin receiving blood flow from a normal co-twin, risking pump twin demise and preterm birth.

Purpose of the Study:

• To review current treatment modalities for TRAP sequence.
• To evaluate the efficacy and timing of interventions for TRAP sequence.

Main Methods:

• Review of existing literature on TRAP sequence treatments.
• Analysis of outcomes associated with radiofrequency ablation, bipolar cord coagulation, and intrafetal laser therapies.

Main Results:

• No single treatment modality has demonstrated superiority for pump twin survival or complication reduction.
• Optimal timing for intervention versus expectant management is not established.
• Very early treatment (<16 weeks) is experimental and aims to reduce first-trimester demise.

Conclusions:

• Further research is essential to determine the most effective treatment and optimal timing for TRAP sequence intervention.
• Current treatment options for TRAP sequence require further investigation for improved outcomes.