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Published on: September 5, 2011
Early vs late intervention in twin reversed arterial perfusion sequence
C Berg1, D Holst, M R Mallmann
1Division of Prenatal Medicine and Gynecologic Sonography, Department of Obstetrics and Gynecology, University of Köln, Köln, Germany; Division of Fetal Surgery, Department of Obstetrics and Prenatal Medicine, University of Bonn, Bonn, Germany.
Early intrafetal laser therapy for twin reversed arterial perfusion (TRAP) sequence may improve pregnancy outcomes. This approach, initiated from 12 weeks gestation, shows promise in reducing complications compared to expectant or radiofrequency ablation management.
Area of Science:
- Maternal-Fetal Medicine
- Perinatology
- Reproductive Medicine
Background:
- Twin reversed arterial perfusion (TRAP) sequence is a rare complication of monochorionic twin pregnancies.
- Management strategies for TRAP sequence have evolved, with a shift towards earlier interventions.
- Previous management involved expectant care or later interventions like radiofrequency ablation (RFA).
Purpose of the Study:
- To compare the efficacy of different management approaches for prenatally diagnosed TRAP sequence.
- To evaluate outcomes associated with expectant management, radiofrequency ablation (RFA), and intrafetal laser therapy.
- To assess the impact of intervention timing on pregnancy outcomes in TRAP sequence.
Main Methods:
- Retrospective analysis of 40 TRAP sequence cases over 10 years.
- Group A: Expectant management or RFA (until 2010, expectant; thereafter, choice of RFA or expectant).
- Group B: Interstitial laser therapy or expectant management offered from diagnosis (earliest at 12 weeks).
Main Results:
- No significant difference in pump twin loss rate between Group A and Group B (26% vs 24%).
- Group B (laser therapy) showed significantly lower rates of preterm premature rupture of membranes (PPROM) and delivery before 34 weeks.
- Gestational age at birth and birth weight were significantly higher in Group B compared to Group A.
Conclusions:
- Prophylactic intrafetal laser therapy from 12 weeks gestation appears beneficial for managing TRAP sequence.
- Early laser intervention is associated with improved obstetric outcomes, including reduced PPROM and later delivery.
- Despite retrospective design, findings support early intrafetal laser as a preferred management strategy for TRAP sequence.
