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Application of povidone-iodine at delivery significantly increases maternal urinary iodine but not neonatal thyrotropin in an area with iodine sufficiency.
Journal of Pediatric Endocrinology & Metabolism : JPEM 2017 August 29
BACKGROUND: The aim of the present study was to investigate the effect of povidone-iodine (PVP-I) application at delivery on maternal urinary iodine concentration (UIC) and neonatal thyrotropin concentration.
METHODS: In this cross-sectional study, urine samples were collected from each pregnant woman after admission to the hospital and before routine application of the PVP-I for delivery preparation and after delivery at time of screening for congenital hypothyroidism. A heel-prick blood sample was taken from all newborns.
RESULTS: A total of 394 pregnant women at time of delivery participated in this study. Median (interquartile range [IQR]) maternal UIC values were 120 (105-157) and 253 (126-470) μg/L before and after delivery, respectively (p<0.001). No significant correlations were observed between maternal UIC before and after delivery and neonatal thyrotropin levels.
CONCLUSIONS: Application of PVP-I significantly increased UIC in postpartum mothers; however, thyrotropin concentration in neonates, whose mothers had adequate UIC, was within the normal range.
METHODS: In this cross-sectional study, urine samples were collected from each pregnant woman after admission to the hospital and before routine application of the PVP-I for delivery preparation and after delivery at time of screening for congenital hypothyroidism. A heel-prick blood sample was taken from all newborns.
RESULTS: A total of 394 pregnant women at time of delivery participated in this study. Median (interquartile range [IQR]) maternal UIC values were 120 (105-157) and 253 (126-470) μg/L before and after delivery, respectively (p<0.001). No significant correlations were observed between maternal UIC before and after delivery and neonatal thyrotropin levels.
CONCLUSIONS: Application of PVP-I significantly increased UIC in postpartum mothers; however, thyrotropin concentration in neonates, whose mothers had adequate UIC, was within the normal range.
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