[Thyroid function disturbances in an infant following maternal topical use of polydine].

A male infant who had symptoms of transient sinus tachycardia and increased concentrations of blood total and free T4 is reported. The mother had used Polydine (P; povidone iodine) for vaginal douching during pregnancy and during the first few weeks after delivery, during which time the infant was fed mother's milk only. Follow-up showed transient elevation of TSH levels in the infant, but with no signs of hypothyroidism. 2 months after the mother stopped using P, the infant's functions had become normal. P should not be used in the perinatal period.