Cited by 18Thyroid Disorders and TreatmentsCardiac Arrhythmias and TreatmentsOphthalmology and Eye Disorders

Amiodarone-Induced Thyrotoxicosis in Adults with Congenital Heart Disease -Clinical Presentation and Response to Therapy

Stan, Marius N., Sathananthan, Matheni, Warnes, Carole A., Brennan, Michael D., Thapa, Prabin, Bahn, Rebecca S.·2014·Endocrine Practice

Abstract

Objective The development of amiodarone-induced thyrotoxicosis (AIT) can threaten the hemodynamic stability of adult patients with congenital heart disease (CHD). Here, we describe the natural history and treatment response of AIT in this at-risk population.Methods We studied retrospectively all cases of AIT that occurred in CHD patients at our institution after a minimum of 3 months on amiodarone. Subjects were identified from the cohort of adults with CHD who were treated at the Mayo Clinic Adult CHD clinic between 1987 and 2009.Results We identified 23 cases of AIT: 7 were type 1, 13 were type 2, and 3 were undefined due to insufficient data. Most patients were symptomatic (17 of 23, 74%), with arrhythmia and weight loss as the most common symptoms. The majority (12 of 23, 52%) were initially observed; 10 patients (43%) were treated medically and 1 patient (5%) underwent thyroidectomy. Four patients from the observation group eventually required active treatment and 3 patients from the medical group required surgery. Asymptomatic patients tended to resolve under observation (5 of 7, 71.4%) rather than progress to active treatment (0 of 4) (P = .06). Discontinuation of amiodarone, AIT type, or use of perchlorate did not impact AIT duration.Conclusion AIT in CHD patients exhibits a wide range of severity and sensitivity to medical therapy. Asymptomatic patients display a trend toward AIT resolution with observation alone. Amiodarone continuation does not appear to impact management outcome or disease duration. Additional studies in this high-risk population could identify elements of pathophysiology that would point toward better disease prevention and treatment.

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Authors
Stan, M. N., Sathananthan, M., Warnes, C. A., Brennan, M. D., Thapa, P., & Bahn, R. S.
Affiliations
  • Mayo Clinic (US)
  • Central DuPage Hospital (US)
Corresponding author
Stan, Marius N.
Venue
Endocrine Practice
Publisher
Elsevier BV
Published
2014-01
Volume
20
Issue
1
Pages
33-40
ISSN
1530-891X (ISSN-L)
OpenAlex
W2121668825
Cited by
18
References
30
Citations by year
2024: 1 · 2023: 1 · 2021: 4 · 2018: 4 · 2017: 5 · 2016: 2 · 2015: 1
FWCI
0.79
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrine Practice (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Center for Research Resources (UL1RR024150)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Ophthalmology and Eye Disorders
Keywords
amiodarone-induced thyrotoxicosis, congenital heart disease, adult congenital heart disease, medical therapy, perchlorate, thyroidectomy, natural history (disease), cardiac arrhythmias, weight loss, drug-induced thyroid dysfunction
MeSH terms
Adult, Amiodarone, Female, Heart Defects, Congenital, Humans, Male, Retrospective Studies, Thyrotoxicosis

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