title: Neonatal thyrotoxicosis with severe supraventricular tachycardia: case report and review of the literature.
abstract: Neonatal thyrotoxicosis is a rare condition caused by the transplacental passage of thyroid stimulating immunoglobulins from mothers with Graves' disease. We report a case of neonatal thyrotoxicosis with concurrent supraventricular tachycardia (SVT). The female infant, who was born by section due to breech delivery and meconium in the amniotic fluid at 36 weeks of gestation, presented with tachycardia on day 7. Her heart rate was between 260 and 300 beats/min, and an electrocardiogram revealed ongoing SVT. Sotalol was effective after two cardioversions in maintaining sinus rhythm. Thyroid function studies revealed hyperthyroidism in the infant, and her mother was found to have Graves' disease. Since symptoms and signs can vary, especially in preterm infants with neonatal hyperthyroidism, we want to emphasize the importance of prenatal care and follow-ups of Graves' disease associated pregnancies and management of newborns after birth.
authors.forename: Aslıhan
authors.initials: A
authors.lastname: Abbasoğlu
authors.forename: Ayşe
authors.initials: A
authors.lastname: Ecevit
authors.forename: Ali Ulaş
authors.initials: AU
authors.lastname: Tuğcu
authors.forename: Lkay
authors.initials: L
authors.lastname: Erdoğan
authors.forename: Sibel Tulgar
authors.initials: ST
authors.lastname: Kınık
authors.forename: Aylin
authors.initials: A
authors.lastname: Tarcan
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000175:diagnosis; D012720:Severity of Illness Index; D013617:Tachycardia, Supraventricular / Q000151:congenital* / Q000175:diagnosis / Q000209:etiology; D013971:Thyrotoxicosis / Q000150:complications / Q000151:congenital* / Q000175:diagnosis