title: Effective thyroxine ratio in newborn infants during exchange transfusion.
abstract: The effect of blood exchange transfusion on the thyroid has been studied by serially establishing the effective thyroxine ratio (ETR). The ETR value is slightly increased in the newborn infant and the level is further augmented by blood exchange. Since the ETR level is lower in the transfused blood than in the blood of the newborn, the finding points to the good thyroid hormone producing capacity of the neonate.
mesh_terms: D001667:Binding, Competitive; D005078:Exchange Transfusion, Whole Blood; D005260:Female; D006801:Humans; D006932:Hyperbilirubinemia / Q000628:therapy; D007231:Infant, Newborn; D008297:Male; D011485:Protein Binding; D013961:Thyroid Gland / Q000502:physiology*; D013974:Thyroxine / Q000378:metabolism*; D013975:Thyroxine-Binding Proteins / Q000032:analysis
chemical_list: D013975:Thyroxine-Binding Proteins; D013974:Thyroxine