2004
DOI: 10.1038/sj.jp.7211104
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Amiodarone-Induced Neonatal Hypothyroidism: A Unique Form of Transient Early-Onset Hypothyroidism

Abstract: Amiodarone is an iodine-rich drug used to treat cardiac dysrhythmias. The structure of amiodarone resembles that of thyroxine, and treatment with amiodarone may alter thyroid function. The effects of antenatal amiodarone use on fetal/neonatal thyroid function have only been addressed in a limited number of patient reports. We describe two cases of transient neonatal hypothyroidism due to in utero amiodarone exposure, followed by a brief review of the available literature.

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Cited by 64 publications
(30 citation statements)
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“…Amiodarone is associated with maternal and neonatal thyroid dysfunction 94. Sotalol and flecainide may be more pro-arrhythmic than amiodarone,85,9597 and fetal sudden deaths have been reported with all these drugs, except (to our knowledge) amiodarone.…”
Section: Fetal Tachycardiamentioning
confidence: 71%
“…Amiodarone is associated with maternal and neonatal thyroid dysfunction 94. Sotalol and flecainide may be more pro-arrhythmic than amiodarone,85,9597 and fetal sudden deaths have been reported with all these drugs, except (to our knowledge) amiodarone.…”
Section: Fetal Tachycardiamentioning
confidence: 71%
“…Stosunek średniego stężenia leku we krwi pępowino-wej do stężenia leku w osoczu krwi matki wynosi od 0,1 do 0,6. Chociaż istnieje wiele doniesień opisujących bezpieczeństwo stosowania AMIO w czasie ciąży, to istnieją również doniesienia o występowaniu wrodzonego wola, niedoczynności czy nadczynności tarczycy u płodu, płodowej bradykardii oraz występowaniu opóźnienia psychoruchowego [103][104][105]. Zaleca się, aby u noworodków, których matki były leczone AMIO wykonywać pełne testy czynnościowe tarczycy.…”
Section: Typ 1 Aitunclassified
“…The average umbilical cord to maternal plasma drug concentration ratio ranges from 0.1 to 0.6. While there are numerous reports describing the safety of AMIO during pregnancy, some reports of congenital goitre, hypothyroidism and hyperthyroidism, foetal bradycardia, and growth and psychomotor retardation have also been reported [103][104][105]. It is recommended that neonates whose mothers were treated with AMIO should have complete thyroid function tests performed; in addition, foetal echocardiography should be considered in all pregnancies exposed to AMIO in the embryonic period.…”
Section: Amiodarone and Pregnancymentioning
confidence: 99%
“…This resolves around 5 months of age, but can be associated with adverse neurologic outcomes (22,23). Maternal use of Iodine antiseptic compounds or exposure to iodinated contrast agents can cause transient CH.…”
Section: Fetal Iodine Exposurementioning
confidence: 99%