to evaluate whether the hypothyroxinaemia , previously noted in hyperbilirubinaemic newborns immediately after exchange transfusion for rh or ab0 incompatibility , was due to impairment in the secretion of thyroid stimulating hormone ( tsh ) by the pituitary , we studied the thyroid hormone response to thyrotropin releasing hormone ( trh ) and compared this response to that seen in a control population of healthy neonates .
C0032002
pituitary
C0040162
hormone