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Article in Chinese | WPRIM | ID: wpr-958127

ABSTRACT

Objective:To investigate the risk factors for cerebral injury in survivors of twin-to-twin transfusion syndrome (TTTS) after fetoscopic laser occlusion of chorioangiopagous vessels(FLOC) and to analyze the neurodevelopmental outcomes at 12 months of corrected age.Methods:A total of 136 cases of TTTS receiving FLOC in the Third Affiliated Hospital of Zhengzhou University from May 2018 to August 2021 were retrospectively selected as the FLOC group, and the survivors were followed up. Neurological development at 12 months of corrected age was assessed using the Griffiths mental development scales-Chinese (GDS-C) from five dimensions with locomotor, personal-social, hearing and language, hand-eye coordination and performance subscales. Eighty-eight fetuses of TTTS pregnancies receiving expectant treatment or amniotic fluid reduction were selected as the non-FLOC group. The perinatal mortality and the incidence of cerebral injury in the two groups were compared, as well as the incidence of cerebral injury between patients undergoing Solomon surgery and selective laser surgery in the FLOC group. Generalized estimating equations were used to analyze the risk factors for neonatal cerebral injury after FLOC and the factors influencing general developmental quotient score at the corrected age of 12 months. Chi-square test, t-test, and Mann-Whitney U test were used for statistical analysis. Results:(1) The perinatal mortality rate in the FLOC group was lower than that in the non-FLOC group [14.7% (20/136) vs 26.1% (23/88), χ 2=4.50, P=0.034]. There was no statistical significance in the incidence of neonatal cerebral injury between the two groups [18.7% (23/123) vs 21.8% (17/78), χ 2=0.29, P=0.592], but the incidence of severe cerebral injury in the FLOC group was lower than that in the non-FLOC group [6.5% (8/123) vs 15.4% (12/78), χ 2=4.20, P=0.040]. (2) In the FLOC group, there was no significant difference in the incidence of cerebral injury between donors and recipients, or between Solomon surgery and selective laser surgery [16.4% (10/61) vs 21.0% (13/62), χ 2=0.42; 20.0% (9/45) vs 17.9% (14/78), χ 2=0.08; both P>0.05]. (3) Multivariate analysis showed that neonatal asphyxia ( OR=7.04, 95% CI: 1.45-34.20, P=0.016) and higher preoperative TTTS stage ( OR=2.05, 95% CI: 1.10-3.82, P=0.023) were risk factors for neonatal cerebral injury. (4) Fifty-two cases were successfully followed up at the corrected age of 12 months, and the incidence of developmental delay in at least one dimension was 34.6% (18/52). Developmental delay was mainly manifested in locomotor skills and language, accounting for 26.9% (14/52) and 11.5% (6/52). No significant difference in Z value was found between recipients and donors in each dimension (all P>0.05). Solomon surgery, larger gestational age at operation and low birth weight were related to low general developmental quotient score (95% CI:-11.71 to-0.23,-1.99 to-0.47,0.00-0.01,respectively,all P<0.05). Conclusions:The occurrence of cerebral injury in TTTS survivors after FLOC is related to preoperative TTTS staging and intrapartum neonatal asphyxia. Neurodevelopment of survivors is related to birth weight and gestational age at surgery, and there is a higher incidence of mild developmental delay at corrected age of 12 months.

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