The Impact of Introduction of Fetoscopic Laser Surgery on Twin-to-Twin Transfusion Syndrome
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Purpose: Fetoscopic laser surgery (FLS) is considered an optimal therapeutic strategy for twin-to- twin transfusion syndrome (TTTS). We aimed to determine the clinical outcomes of TTTS patients since the introduction of FLS. Methods: A retrospective study of TTTS patients born between January 2005 and December 2015 was conducted. Mortality and morbidity were compared in the FLS and non-FLS groups. The FLS group was divided into selective FLS and Solomon technique group, and subgroup analysis was performed. Results: Of 70 pregnancies diagnosed with TTTS during the study period, FLS was performed for 35 (50%). Survival of at least one infant at discharge was achieved in 100% (35/35) of pregnancies in the FLS group and 91.4% (32/35) in the non-FLS group (P=0.028). Subgroup analysis revealed that the Solomon technique group had a higher dual survival rate than the selective FLS group (81.3% vs. 57.9%, P=0.036). Neonatal mortality was significantly lower in the FLS group than in the non-FLS group (1.7% vs. 16.4%, P=0.005). Severe intraventricular hemorrhage more than grade 3 was less frequent in the FLS group than in the non-FLS group (0% vs. 18.2%, P= 0.001). The FLS group showed smaller inter-twin differences in birth weight (24.4% vs. 33.7%, P= 0.032) and lower incidence of twin anemia-polycythemia sequence (0% vs. 43.8%, P< 0.001). Conclusion: Since the introduction of FLS, the survival rate of TTTS patients has improved. The Solomon technique resulted in better dual survival rates than selective FLS.
Abstract
Purpose: Fetoscopic laser surgery (FLS) is considered an optimal therapeutic strategy for twin-to- twin transfusion syndrome (TTTS). We aimed to determine the clinical outcomes of TTTS patients since the introduction of FLS. Methods: A retrospective study of TTTS patients born between January 2005 and December 2015 was conducted. Mortality and morbidity were compared in the FLS and non-FLS groups. The FLS group was divided into selective FLS and Solomon technique group, and subgroup analysis was performed. Results: Of 70 pregnancies diagnosed with TTTS during the study period, FLS was performed for 35 (50%). Survival of at least one infant at discharge was achieved in 100% (35/35) of pregnancies in the FLS group and 91.4% (32/35) in the non-FLS group (P=0.028). Subgroup analysis revealed that the Solomon technique group had a higher dual survival rate than the selective FLS group (81.3% vs. 57.9%, P=0.036). Neonatal mortality was significantly lower in the FLS group than in the non-FLS group (1.7% vs. 16.4%, P=0.005). Severe intraventricular hemorrhage more than grade 3 was less frequent in the FLS group than in the non-FLS group (0% vs. 18.2%, P= 0.001). The FLS group showed smaller inter-twin differences in birth weight (24.4% vs. 33.7%, P= 0.032) and lower incidence of twin anemia-polycythemia sequence (0% vs. 43.8%, P< 0.001). Conclusion: Since the introduction of FLS, the survival rate of TTTS patients has improved. The Solomon technique resulted in better dual survival rates than selective FLS.
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