2017
DOI: 10.1530/eje-17-0018
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The clinical value of regular thyroid function tests during amiodarone treatment

Abstract: In a considerable proportion of patients who developed AIT/AIH, earlier thyroid function tests showed no subclinical AIT/AIH. Less than half of the patients with a subclinical event subsequently developed overt AIT/AIH. This study provides data to reconsider the yield of regular testing of thyroid function to predict overt thyroid dysfunction in amiodarone treated patients.

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Cited by 33 publications
(23 citation statements)
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References 22 publications
(21 reference statements)
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“…In AIH patients treated with L-T 4 , it is recommended that the L-T 4 dose be adjusted to normalize serum FT 4 and FT 3 levels and maintain serum TSH levels between the upper limit of the reference range or slightly below (upper third of normal range), and slightly elevated (< 10 mU/L) values in the case of overt AIH, to avoid the risk of overtreatment. If amiodarone is withdrawn, L-T 4 overtreatment should be avoided because of possible exacerbation of heart disease symptoms; in some cases the L-T 4 dose needs to be reduced, and in others L-T 4 may be discontinued, because AIH subsides in about 50% of cases within 2-3 months, particularly in the absence of underlying thyroid abnormalities [22]. Evidence is limited regarding the management of AIH in pregnancy [23].…”
Section: How Does Amiodarone Affect Thyroid Function Tests In Euthyromentioning
confidence: 99%
“…In AIH patients treated with L-T 4 , it is recommended that the L-T 4 dose be adjusted to normalize serum FT 4 and FT 3 levels and maintain serum TSH levels between the upper limit of the reference range or slightly below (upper third of normal range), and slightly elevated (< 10 mU/L) values in the case of overt AIH, to avoid the risk of overtreatment. If amiodarone is withdrawn, L-T 4 overtreatment should be avoided because of possible exacerbation of heart disease symptoms; in some cases the L-T 4 dose needs to be reduced, and in others L-T 4 may be discontinued, because AIH subsides in about 50% of cases within 2-3 months, particularly in the absence of underlying thyroid abnormalities [22]. Evidence is limited regarding the management of AIH in pregnancy [23].…”
Section: How Does Amiodarone Affect Thyroid Function Tests In Euthyromentioning
confidence: 99%
“…An otherwise unexplained significant change in warfarin dosing can also be a subtle clue to the clinical suspicion of AIT in patients with cardiac arrhythmias treated with amiodarone and warfarin. Another common presentation is the recurrence of arrhythmias, or symptoms suggestive of them as palpitations, light-headedness and syncope while on amiodarone therapy [4,5,[19][20].…”
Section: Aitmentioning
confidence: 99%
“…Because of the high iodine content, thyroid dysfunction is common in patients treated with amiodarone, and periodic monitoring with thyroid function tests (TFTs) is mandatory when patients are treated with amiodarone [5]. Although the drug is commonly used by cardiologists, many cases may turn up in endocrine clinics when these patients develop thyroid dysfunction.…”
Section: Introductionmentioning
confidence: 99%
“…Для хворих на АмІГ, які отримують терапію L-Т 4 , реко-мендується, щоб доза L-T 4 регулювалася до норма-лізації рівнів FT 4 і FT 3 в сироватці і підтримувався рівень ТТГ у сироватці крові між верхньою межею початкового діапазону або трохи нижче (верхня тре-тина нормального діапазону) і дещо підвищеними (< 10 мМО/л) значеннями у випадку явного гіпо-тиреозу, щоб уникнути ризику передозування L-T 4 . Якщо аміодарон відміняється, слід уникати над-мірного лікування L-T 4 через можливе загострення симптомів хвороби серця; в одних випадках доза L-T 4 має бути зменшена, а в інших L-T 4 може бути відмінений, оскільки гіпотиреоз регресує приблиз-но в 50 % випадків протягом 2-3 місяців, особливо за відсутності основних аномалій ЩЗ [22]. Існують обмежені дослідження стосовно лікування АмІГ під час вагітності [23].…”
Section: як аміодарон впливає на функцію щз в осіб з еутиреозом?unclassified