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1.
Endocrinol Nutr ; 58(3): 121-6, 2011 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-21367680

RESUMO

INTRODUCTION: Amiodarone-induced thyrotoxicosis (AIT) is a common clinical disorder that may be life threatening and whose clinical manifestations and response to treatment may vary among patients. METHODS: We present three patients treated with amiodarone for atrial fibrillation who developed AIT at least 36 months after beginning the treatment. Thyrotoxicosis worsened the underlying cardiac disorders and was resistant to treatment based on the combination of dexamethasone 8-12 mg/day i.v., thioamides 45 mg/day p.o., beta blockers and potassium perchlorate at doses of 800 to 1000 mg per day p.o. Two of the patients attained sustained euthyroidism after 12 and 32 days of combined treatment, while the third required total thyroidectomy. CONCLUSION: The combination of thioamides with potassium perchlorate is an appropriate form of therapy for AIT in patients resistant to thioamides. The use of this combination should be evaluated in patients with mixed AIT or AIT of unclear etiology.


Assuntos
Amiodarona/efeitos adversos , Percloratos/uso terapêutico , Compostos de Potássio/uso terapêutico , Tireotoxicose/tratamento farmacológico , Acenocumarol/administração & dosagem , Acenocumarol/uso terapêutico , Antagonistas Adrenérgicos beta/administração & dosagem , Antagonistas Adrenérgicos beta/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , Algoritmos , Amiodarona/uso terapêutico , Fibrilação Atrial/tratamento farmacológico , Fármacos Cardiovasculares/uso terapêutico , Comorbidade , Dexametasona/administração & dosagem , Dexametasona/uso terapêutico , Quimioterapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Marca-Passo Artificial , Percloratos/administração & dosagem , Compostos de Potássio/administração & dosagem , Tioamidas/administração & dosagem , Tioamidas/uso terapêutico , Hormônios Tireóideos/sangue , Tireoidectomia , Tireotoxicose/sangue , Tireotoxicose/induzido quimicamente , Tireotoxicose/cirurgia , Tireotropina/sangue
2.
Endocrinol. nutr. (Ed. impr.) ; 58(3): 121-126, mar. 2011. tab, mapas
Artigo em Espanhol | IBECS (Espanha) | ID: ibc-95828

RESUMO

Introducción La tiroiditis inducida por amiodarona (TIA) es una entidad clínica frecuente, con distintas formas de presentación, respuesta variable al tratamiento, y que puede ser potencialmente fatal. Métodos Se presentan tres pacientes con fibrilación auricular, que desarrollaron una TIA tras al menos 36 meses de exposición al fármaco. El hipertiroidismo asociado no respondió a la terapia farmacológica convencional, conllevando un empeoramiento franco de la cardiopatía de los pacientes, lo que motivó la indicación de tiroidectomía total, previa instauración de una terapia basada en la combinación de dexametasona 8-12mg/día iv, tionamidas 45mg/día vo, beta-bloqueantes, junto perclorato potásico 0,8-1g/día vo. Dos pacientes normalizaron las hormonas tiroideas periféricas tras 12 y 32 días de terapia combinada. Conclusión La combinación de tionamidas y perclorato potásico es una alternativa terapéutica eficaz en la TIA tipo I en pacientes refractarios a terapia convencional. Debe valorarse su empleo en pacientes con TIA mixta o etiología no aclarada (AU)


Introduction: Amiodarone-induced thyrotoxicosis (AIT) is a common clinical disorder that maybe life threatening and whose clinical manifestations and response to treatment may vary among patients. Methods: We present three patients treated with amiodarone for atrial fibrillation who developed AIT at least 36 months after beginning the treatment. Thyrotoxicosis worsened the underlying cardiac disorders and was resistant to treatment based on the combination of dexamethasone 8-12 mg/day i.v., thioamides 45 mg/day p.o., beta blockers and potassium perchlorate at doses of 800 to 1000 mg per day p.o. Two of the patients attained sustained euthyroidism after 12 and 32 days of combined treatment, while the third required total thyroidectomy. Conclusion: The combination of thioamides with potassium perchlorate is an appropriate formof therapy for AIT in patients resistant to thioamides. The use of this combination should be evaluated in patients with mixed AIT or AIT of unclear etiology (AU)


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Amiodarona/efeitos adversos , Tireotoxicose/induzido quimicamente , Tireotoxicose/tratamento farmacológico , Marca-Passo Artificial , Quimioterapia Combinada
3.
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