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Objective: Radiofrequency ablation (RFA) is a management alternative for complicated monochorionic twin pregnancies. The purpose of this study is to evaluate risk factors for fetal death after RFA.
Methods: An observational study was performed to document the perinatal outcomes of all cases undergoing fetal reduction using RFA from 2010 to 2016 at the Shanghai First Maternity and Infant Hospital. A multiple regression model was built to identify predictors of the death of the remaining fetus after RFA.
Results: A total of 183 patients treated with RFA for fetal reduction were analyzed, including 53 selective intrauterine growth restriction, 35 twin-twin transfusion syndrome, 36 dichorionic triamniotic triplets, 24 monochorionic twins discordant for fetal anomaly, and 35 twin reversed arterial perfusion. The prevalence of fetal death after RFA was 23% (43:183). The occurrence of fetal death after RFA was independently associated with more than 2 cycles of RFA coagulation (OR 3.46; 95% CI, 1.34-8.94; P = .01).
Conclusion: More than 2 cycles of RFA coagulation is the only independent risk factors of fetal death after RFA.
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