Maternal thyrotropin is independently related to Small for Gestational Age neonates at term

作者：Monen L^*; Kuppens S M; Hasaart T H; Oosterbaan H P; Oei S G; Wijnen H; Hutton E K; Vader H L; Pop V J

来源：Clinical Endocrinology, 2015, 82(2): 254-259.

DOI：10.1111/cen.12578

ObjectiveSmall for gestational age (SGA) newborns constitute still a major cause of perinatal morbidity and mortality. Overt thyroid disease is a known cause of preterm birth and low birthweight but in its untreated condition it is rare today. In this study, we investigated the possible relation between maternal thyroid function assessed in euthyroid women at each trimester and the incidence of term born SGA neonates.
DesignA prospective cohort study was performed.
PatientsThyroid function was assessed at 12, 24 and 36weeks gestation in 1051 healthy Caucasian women who delivered at 37weeks gestation.
MeasurementsOne-way anova was used to compare mean TSH and FT4 levels between women with SGA neonates and controls. Multiple logistic regression analysis was performed to adjust for known risk factors of SGA.
ResultsSeventy (67%) SGA neonates were identified and they were significantly more often born to women with a TSH975th at first and third trimester. Multiple logistic regression analysis showed that smoking (OR: 44, 95% CI: 249-764), pre-eclampsia (OR: 28, 95% CI: 119-678) and TSH975th percentile (OR 33, 95% CI 139-753) were significantly related to SGA. Maternal FT4 levels and TPO-Ab status were not associated with SGA offspring.
ConclusionsOur data show that TSH levels in the upper range of the reference interval at different trimesters (30-329mIU/l) are independently related to an increased risk of delivering SGA neonates at term.

• 出版日期2015-2