208 results match your criteria Thyroid Dysfunction Induced by Amiodarone Therapy

The effects of amiodarone on thyroid function in pediatric and adolescent patients.

Curr Opin Pediatr 2021 Jun 9. Epub 2021 Jun 9.

Division of Pediatric Endocrinology, Advocate Children's Hospital, Oak Lawn, Illinois Division of Pediatric Endocrinology and Diabetes, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.

Purpose Of Review: Amiodarone-induced thyroid dysfunction is well established. The present review discusses recent literature related to the effects of amiodarone on the thyroid gland and thyroid function in pediatrics.

Recent Findings: Current guidelines in adults treated with amiodarone recommend baseline thyroid function testing followed by initiation of thyroid hormone monitoring after 3 months on therapy. Read More

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Amiodarone-induced thyroid dysfunction in children: insights from the THYRAMIO study.

Ther Adv Endocrinol Metab 2021 24;12:20420188211001165. Epub 2021 Apr 24.

Pediatric Endocrinology, Cliniques universitaires Saint Luc, Av. Hippocrate 10, Brussels, B-1200, Belgium.

Background: Amiodarone treatment is effective against various types of arrhythmias but is associated with adverse effects affecting, among other organs, thyroid function. Amiodarone-induced thyroid dysfunction was not thoroughly evaluated in children as it was in adults, yet this affection may lead to irreversible neurodevelopmental complications. Our study aimed to define the incidence and risk factors of amiodarone-induced thyroid dysfunction in children. Read More

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Appraisal of amiodarone-loaded PLGA nanoparticles for prospective safety and toxicity in a rat model.

Life Sci 2021 Jun 11;274:119344. Epub 2021 Mar 11.

Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, P.O. Box 35516, Mansoura, Egypt.

Aims: Amiodarone (AM) is a highly efficient drug for arrhythmias treatment, but its extra-cardiac adverse effects offset its therapeutic efficacy. Nanoparticles (NPs)-based delivery system could provide a strategy to allow sustained delivery of AM to the myocardium and reduction of adverse effects. The primary purpose was to develop AM-loaded NPs and explore their ameliorative effects versus off-target toxicities. Read More

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The Role of Nuclear Medicine in the Clinical Management of Benign Thyroid Disorders, Part 1: Hyperthyroidism.

J Nucl Med 2021 03 2;62(3):304-312. Epub 2020 Oct 2.

Molecular Imaging and Therapy Service, Memorial Sloan Kettering Cancer Center, New York, New York.

Benign thyroid disorders, especially hyper- and hypothyroidism, are the most prevalent endocrine disorders. The most common etiologies of hyperthyroidism are autoimmune hyperthyroidism (Graves disease, GD), toxic multinodular goiter (TMNG), and toxic thyroid adenoma (TA). Less common etiologies include destructive thyroiditis (e. Read More

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Thyroid effects of amiodarone: clinical update.

Curr Opin Endocrinol Diabetes Obes 2020 10;27(5):329-334

Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts, USA.

Purpose Of Review: Amiodarone-induced thyroid dysfunction is well established and commonly encountered but is associated with several diagnostic and management challenges. The present review discusses recent evidence published related to the effects of amiodarone on the thyroid gland and thyroid function.

Recent Findings: Retrospective studies to evaluate amiodarone-induced thyroid dysfunction in children show the occurrence of potential clinically significant changes within 2 weeks of amiodarone initiation that may not be detected if standard adult guidelines for thyroid hormone monitoring are followed. Read More

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October 2020

Duration of Exposure to Thyrotoxicosis Increases Mortality of Compromised AIT Patients: the Role of Early Thyroidectomy.

J Clin Endocrinol Metab 2020 09;105(9)

Unit of Endocrinology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.

Context: Patients with amiodarone-induced thyrotoxicosis (AIT) and severely reduced left ventricular ejection fraction (LVEF) have a high mortality rate that may be reduced by total thyroidectomy. Whether in this subset of patients thyroidectomy should be performed early during thyrotoxicosis or later after restoration of euthyroidism has not yet been settled.

Objectives: Mortality rates, including peritreatment mortality and 5-year cardiovascular mortality, and predictors of death, evaluated by Cox regression analysis. Read More

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September 2020

[Iodine-induced thyroid dysfunction].

Med Klin Intensivmed Notfmed 2021 May 24;116(4):307-311. Epub 2020 Jun 24.

Klinik für Allgemeine Innere Medizin, Endokrinologie, Diabetologie, Infektiologie, Klinikum Bielefeld Mitte, Bielefeld, Deutschland.

Background: Iodine-induced thyroid dysfunctions are, despite their rare occurrence, important clinical syndromes. Their immediate recognition can avoid serious consequences. Important triggers can be iodine-containing contrast agents, amiodarone or iodine-containing disinfectants. Read More

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Georgian Med News 2019 Dec(297):84-87

Ivano-Frankivsk National Medical University, Ukraine.

The purpose of the work was to establish the frequency and conditions in which structural and functional changes of the liver might occur in case of long-term amiodarone use, depending on thyroid dysfunction. The study included 80 patients with cardiosclerosis with atrial fibrillation (AF). The patients were assigned to: group I (n=60) - received amiodarone at a maintenance dose for one year (on background of basic therapy); control group (CG) - patients (n=20) who received on the background of basic therapy digoxin and bisoprolol. Read More

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December 2019

Amiodarone-induced thyrotoxicosis in a pediatric patient: A rare and demanding clinical case.

Pediatr Rep 2019 Sep 24;11(3):8166. Epub 2019 Sep 24.

Unit of Pediatric Endocrinology, Centro Hospitalar de Lisboa Central, Lisbon.

Thyroid dysfunction is one of the most common adverse effects of amiodarone therapy, ranging from subclinical changes to overt clinical thyrotoxicosis (AIT) and/or hypothyroidism. Due to its heterogeneity, AIT lasts as a defiant entity, leading to a thorny treatment course, particularly in pediatrics. AIT can be classified as either type 1, type 2 or mixed form based on its pathophysiology. Read More

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September 2019

Comparison Between Total Thyroidectomy and Medical Therapy for Amiodarone-Induced Thyrotoxicosis.

J Clin Endocrinol Metab 2020 01;105(1)

Unit of Endocrinology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.

Context: It is not known whether total thyroidectomy is more favorable than medical therapy for patients with amiodarone-induced thyrotoxicosis (AIT).

Objective: To compare total thyroidectomy with medical therapy on survival and cardiac function in AIT patients.

Methods: Observational longitudinal cohort study involving 207 AIT patients that had received total thyroidectomy (surgery group, n = 51) or medical therapy (medical therapy group, n = 156) over a 20-year period. Read More

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January 2020

The Effects of Amiodarone on Thyroid Function in Pediatric and Young Adult Patients.

J Clin Endocrinol Metab 2019 11;104(11):5540-5546

Thyroid Center, Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

Context: Amiodarone is used in patients with arrhythmias, but thyroid dysfunction [amiodarone-induced thyrotoxicosis (AIT) or amiodarone-induced hypothyroidism (AIH)] is a common adverse effect. As the onset of AIT and AIH has not been studied in children, the timing of dysfunction and long-term monitoring are not known in this population.

Objective: To describe the incidence and timing of amiodarone-induced thyroid dysfunction in children and adolescents, with a secondary aim to identify risk factors for amiodarone-induced thyroid dysfunction, and to identify variance in thyroid hormone surveillance and treatment. Read More

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November 2019

Amiodarone-induced thyroid dysfunction in the developmental period: prenatally, in childhood, and adolescence - case reports and a review of the literature.

Endokrynol Pol 2019 5;70(5):392-400. Epub 2019 Jul 5.

Department of Paediatric and Adolescent Endocrinology, Paediatric Institute, Medical College, Jagiellonian University in Cracow, Cracow, Poland.

Introduction: Amiodarone is an important antiarrhythmic drug used in paediatric practice, mainly in children with complex congenital cardiac diseases and/or severe arrhythmias. One of the side effects of amiodarone therapy is thyroid dysfunction, which is observed in about 20% of patients. The thyroid dysfunction may present with various forms: from subclinical changes in hormone levels to amiodaroneinduced thyrotoxicosis (AIT) and amiodarone-induced hypothyroidism (AIH). Read More

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Incidence of thyroid dysfunctions during treatment with nivolumab for non-small cell lung cancer: Retrospective study of 105 patients.

Presse Med 2019 Apr 17;48(4):e199-e207. Epub 2019 Apr 17.

CHU Larrey, Department of endocrinology and metabolic diseases, 31059 Toulouse, France. Electronic address:

Introduction: Immunotherapy is a standard not only in second line but also in first line treatment in patients with non-small cell lung cancer (NSCLC) and other tumors. Thyroid dysfunctions are the most common endocrine toxicities.

Objective: To determine the incidence of thyroid dysfunctions during treatment with a PD-1 monoclonal antibody (nivolumab) in patients with NSCLC. Read More

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Patterns of amiodarone-induced thyroid dysfunction in infants and children.

Heart Rhythm 2019 09 21;16(9):1436-1442. Epub 2019 Mar 21.

Division of Pediatric Endocrinology and Metabolism, Mayo Clinic, Rochester, Minnesota. Electronic address:

Background: Heart Rhythm Society guidelines recommend obtaining thyroid function tests (TFTs) at amiodarone initiation and every 6 months thereafter in adults, with no specific pediatric recommendations. Untreated hypothyroidism in young children negatively affects brain development and somatic growth, yet the optimal screening frequency for pediatric patients remains unclear, and limited data exist on pediatric amiodarone-induced thyroid dysfunction.

Objective: The purpose of this study was to describe the patterns of amiodarone-induced thyroid dysfunction in pediatric patients. Read More

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September 2019

Amiodarone and thyroid physiology, pathophysiology, diagnosis and management.

Trends Cardiovasc Med 2019 07 20;29(5):285-295. Epub 2018 Sep 20.

Divisions of Cardiology and Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States.

Although amiodarone is considered the most effective antiarrhythmic agent, its use is limited by a wide variety of potential toxicities. The purpose of this review is to provide a comprehensive "bench to bedside" overview of the ways amiodarone influences thyroid function. We performed a systematic search of MEDLINE to identify peer-reviewed clinical trials, randomized controlled trials, meta-analyses, and other clinically relevant studies. Read More

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[Challenges in the management of amiodarone-induced thyrotoxicosis].

Presse Med 2018 Sep 28;47(9):746-756. Epub 2018 Sep 28.

CHU Clermont-Ferrand, service d'endocrinologie, diabétologie et maladies métaboliques, 63003 Clermont-Ferrand, France; Laboratoire GReD : UMR université Clermont Auvergne-CNRS 6293, Inserm U1103, BP 10448, 63177 Aubiere, France.

Amiodarone, a benzofuranic iodine-rich pan antiarrhythmic drug, is frequently associated with thyroid dysfunction. This side effect is heterogeneous and unpredicted, motivating regular evaluation of thyroid function tests. In contrary to hypothyroidism, amiodarone-induced thyrotoxicosis (AIT) is a challenging situation owing to the risk of deterioration of the general and cardiac status of such debilitating patients. Read More

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September 2018

Diagnosis and Clinical Course of Three Adolescents with Amiodarone-Induced Hyperthyroidism.

Pediatr Cardiol 2018 Dec 21;39(8):1707-1716. Epub 2018 Sep 21.

Hospital for Children and Adolescents, University Leipzig, Liebigstr. 20a, 04103, Leipzig, Germany.

Amiodarone-induced hyperthyroidism is a known side effect of amiodarone treatment. In the pediatric population, long-term amiodarone treatment is rarely indicated because of its severe side effects including thyroid function impairment. Treatment is therefore restricted to therapy-resistant arrhythmias. Read More

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December 2018

Adverse effects of amiodarone therapy in adults with congenital heart disease.

Congenit Heart Dis 2018 Nov 21;13(6):944-951. Epub 2018 Sep 21.

Department of Cardiology, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia.

Objective: Amiodarone is a highly effective antiarrhythmic therapy, however its toxicity profile often limits treatment. This is particularly relevant in adults with congenital heart disease (CHD), who are often young and in whom other antiarrhythmic agents commonly fail or are contraindicated. We sought to determine incidence and predictors of adverse effects caused by amiodarone in adult CHD (ACHD). Read More

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November 2018

Amiodarone induced myxedema coma: Two case reports and literature review.

Heart Lung 2018 Jul - Aug;47(4):429-431. Epub 2018 May 21.

Department of Cardiology, New York Medical College, St. Joseph Medical Center, 703 Main Street, Paterson, NJ 07503, USA.

Amiodarone is a benzofuran derivative that contains 37% iodine by weight and is structurally similar to the thyroid hormones. Amiodarone has a complex effect on the thyroid gland, ranging from abnormalities of thyroid function tests to overt thyroid dysfunction, with either thyrotoxicosis or hypothyroidism. Myxedema coma secondary to amiodarone use has been rarely reported in the literature. Read More

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February 2019

Amiodarone-Induced Thyroid Dysfunction: A Clinical Update.

Exp Clin Endocrinol Diabetes 2018 Jun 20;126(6):333-341. Epub 2018 Mar 20.

Department of Endocrinology, Diabetes & Metabolism, University Hospitals of Morecambe Bay NHS Foundation Trust, United Kingdom, LA1 4RP.

Amiodarone is one of the most commonly prescribed antiarrhythmic agents in clinical practice owing to its efficacy, even with high toxicity profile. The high iodine content and the prolonged biological half-life of the drug can result in thyroid dysfunction in a high proportion of patients treated with amiodarone even after cessation of amiodarone. Both hypothyroidism and hyperthyroidism are common side effects that mandate regular monitoring of patients with thyroid function tests. Read More

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Efficacy and Safety of Low-Dose Amiodarone Therapy for Tachyarrhythmia in Congenital Heart Disease.

Pediatr Cardiol 2018 Jun 9;39(5):1016-1022. Epub 2018 Mar 9.

Department of Pediatric Cardiology, Sakakibara Heart Institute, 3-16-1 Asahi-cho, Fuchu, Tokyo, 183-0003, Japan.

Amiodarone (AMD) is a class III anti-arrhythmic drug that is highly effective for tachyarrhythmia treatment. AMD is widely used in adults with congenital heart disease (CHD); however, higher doses of AMD (> 200 mg/day) can cause various non-cardiac side effects. The purpose of this study was to assess the efficacy, safety, and adverse events of low-dose AMD (≤ 200 mg/day) for tachyarrhythmia in patients with CHD. Read More

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A case of probable Amiodarone-induced pancreatitis in the treatment of atrial fibrillation: a literature review and case report.

J Community Hosp Intern Med Perspect 2017 14;7(6):369-371. Epub 2017 Dec 14.

Department of Internal Medicine, Tower Health: Reading Hospital, Reading, PA, USA.

Amiodarone is an effective medication used in the treatment of several different arrhythmias. Its most well-known adverse effects include pulmonary fibrosis, thyroid dysfunction, and hepatotoxicity. A less common side effect is acute pancreatitis. Read More

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December 2017

Dysthyroidism and Chronic Heart Failure: Pathophysiological Mechanisms and Therapeutic Approaches.

Adv Exp Med Biol 2018 ;1067:239-253

Cardiology Unit, Cardiothoracic Department, Policlinic University Hospital, Bari, Italy.

Among comorbidity in chronic heart failure (CHF), dysthyroidism represents a relevant problem especially in the ageing CHF patients worldwide. Thyroid greatly affects many cardiovascular activities and its dysfunction may worsen a CHF condition. In particular, hypothyroidism has a relative high prevalence in patients with heart failure and it plays a key role in influencing CHF onset, progression and prognosis. Read More

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October 2018

The Role of Radiopharmaceuticals in Amiodarone-Induced Thyroid Pathology.

Curr Radiopharm 2017 Nov;10(3):146-154

Ion Chiricuta Institute of Oncology, Cluj-Napoca, Romania.

Background And Objective: The use of amiodarone for the treatment of ventricular and supraventricular dysrhythmias brings in organism an increased amount of iodine, interfering with thyroid function. If the treatment needs to be interrupted, iodine remains at abnormal levels for months or even years. The aim of the study was to review the literature regarding the optimal tests for early diagnostic and to analyze the role of nuclear medicine tests in the differential and correct assessment of the amiodarone-induced thyroid pathology. Read More

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November 2017

The clinical value of regular thyroid function tests during amiodarone treatment.

Eur J Endocrinol 2017 Jul 19;177(1):9-14. Epub 2017 Apr 19.

Department of Internal MedicineDivision of Endocrinology.

Objective: Amiodarone is used for the maintenance of sinus rhythm in patients with arrhythmias, but thyroid dysfunction (amiodarone-induced thyrotoxicosis (AIT) or amiodarone-induced hypothyroidism (AIH)) is a common adverse effect. As the onset of AIT and AIH may be unpredictable, the value of long-term regular monitoring of amiodarone treated patients for thyroid dysfunction is still uncertain.

Design: We retrospectively documented the frequency at which overt thyroid dysfunction was preceded by subclinical thyroid dysfunction. Read More

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[Amiodarone-induced thyrotoxicosis].

G Ital Cardiol (Rome) 2017 Mar;18(3):219-229

Unità di Endocrinologia, Dipartimento di Medicina Clinica e Sperimentale, Università degli Studi, Pisa.

Amiodarone-induced thyroid dysfunction occurs in about 15-20% of patients under amiodarone therapy. Amiodarone-induced hypothyroidism (AIH) can develop in patients with an apparently normal thyroid gland or in those with an underlying chronic autoimmune thyroiditis. On a clinical ground, AIH is not challenging and can be easily treated with L-thyroxine therapy. Read More

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Exploring New Zealand prescription data using sequence symmetry analyses for predicting adverse drug reactions.

J Clin Pharm Ther 2017 Apr 13;42(2):189-194. Epub 2016 Dec 13.

School of Pharmacy, University of Otago, Dunedin, New Zealand.

What Is Known And Objective: Prescription sequence symmetry analyses (PSSA) is a ubiquitous tool employed in pharmacoepidemiological research to predict adverse drug reactions (ADRs). Several studies have reported the advantage of PSSA as a method that can be applied to a large prescription database with computational ease. The objective of this study was to validate New Zealand (NZ) prescription database as a potential source for identifying ADRs using the PSSA method. Read More

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Toxic and Endocrine Myopathies.

Continuum (Minneap Minn) 2016 Dec;22(6, Muscle and Neuromuscular Junction Disorders):1815-1828

Purpose Of Review: This article discusses the clinical features, pathophysiology, and management of toxic and endocrine myopathies.

Recent Findings: Early detection and expeditious correction of metabolic disturbances in endocrinopathies such as Cushing syndrome, thyroid and parathyroid diseases, and acromegaly can minimize and prevent neurologic complications including myopathy. Recently proposed mechanisms of injury in patients with critical illness myopathy include inhibition of protein synthesis, mitochondrial dysfunction, disruption of the ubiquitin-proteasome system, oxidative stress, and disruption of intramuscular calcium homeostasis, which can cause a myosin-loss myopathy. Read More

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December 2016

Risk factors for amiodarone-induced thyroid dysfunction in Japan.

J Arrhythm 2016 Dec 5;32(6):474-480. Epub 2016 May 5.

Division of Clinical Drug Informatics, School of Pharmacy, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-0818, Japan.

Background: Amiodarone is associated with a number of significant adverse effects, including elevated transaminase levels, pulmonary fibrosis, arrhythmia, and thyroid dysfunction. Although thyroid dysfunction is considered to be a common and potentially serious adverse effect of amiodarone therapy, the exact pathogenesis remains unknown because of its complex manifestations. Therefore, the prevalence of, and risk factors for, amiodarone-induced thyroid dysfunction in Japanese patients were investigated in the present study. Read More

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December 2016

[Thyroid hormones and cardiovascular system].

Vnitr Lek Fall 2016;62(9 Suppl 3):92-98

Cardiovascular system is essentially affected by thyroid hormones by way of their genomic and non-genomic effects. Untreated overt thyroid dysfunction is associated with higher cardiovascular risk. Although it has been studied more than 3 decades, in subclinical thyroid dysfunction the negative effect on cardiovascular system is much more controversial. Read More

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