NEONATAL THYROID HORMONES IN RELATION TO MODE OF DELIVERY
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The aim of present study is to examine the infleunce of mode of delivery on the neonatal thyroid hormones immediately after birth by comparing serum concentrations of these hormones in neonates delivered by normal vaginal deliveries and those by caesarean sections. This study included three groups of newborns from uncomplicated pregnancies: Group (I) included 20 newborns delivered by normal vaginal deliveries (N.V.D), Group (II) included 20 newborns delivered by emergency caesarean sections (EMCS) and group (III) included 20 newborns delivered by elective caesarean sections (ELCS). Umbilical venous blood samples were obtained immediately after birth. Serum T3, T4, TSH, glucose and free fatty acids (FFA) were measured. There were significant increases (P<0.05) in serum T3, T4 and TSH in newborns delivered by EMCS and ELCS compared to neonates delivered by normal vaginal deliveries (NVD) and also, serum T3, T4 and TSH were significantly increased (p<0.05) in newborns delivered by ELCS compared to those delivered by EMCS. We concluded that the mode of delivery affect the serum concentrations of thyroid hormones and TSH at birth.