Can One Predict Resolution of Neonatal Hyperthyrotropinemia?

Area of Science:

• Neonatal Endocrinology
• Pediatric Endocrinology
• Thyroid Disorders

Background:

• Neonatal hyperthyrotropinemia, characterized by elevated thyroid-stimulating hormone (TSH) levels, can be transient or permanent.
• Predicting the persistence of elevated TSH is crucial for appropriate management and follow-up of affected infants.

Purpose of the Study:

• To identify predictors distinguishing transient from permanent neonatal hyperthyrotropinemia.
• To investigate the hypothesis that greater perinatal stress is associated with transient TSH elevations.

Main Methods:

• Retrospective study of infants diagnosed with hyperthyrotropinemia between 2002 and 2014.
• Classification into three groups: never treated, transient congenital hypothyroidism, and permanent congenital hypothyroidism.
• Univariate and multiple logistic regression analyses were performed, with and without exclusion of infants with maternal thyroid disease.

Main Results:

• Of 76 infants, 46% had transient hyperthyrotropinemia. Male infants were nearly 5 times more likely to have transient elevations.
• Transient congenital hypothyroidism was associated with greater maternal age, higher rates of cesarean delivery, and retinopathy of prematurity.

Conclusions:

• Neonatal thyrotropin elevations are transient in a majority of cases.
• Maternal and perinatal risk factors may be associated with the development and persistence of neonatal hyperthyrotropinemia.