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Class III antiarrhythmic drugs are a group of medications that can prolong action potentials in the heart. They achieve this by blocking potassium channels or enhancing inward currents from sodium channels. However, these drugs have a unique property of "reverse use-dependence," which is most pronounced at slower heart rates and can lead to torsades de pointes—a specific type of arrhythmia. However, it is essential to note that excessive QT interval prolongation—a measure of the heart's...

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Updated: Jun 13, 2026

Zebra II as A Novel System to Record Electrophysiological Signals in Zebrafish

Zebra II as A Novel System to Record Electrophysiological Signals in Zebrafish

Published on: August 16, 2024

[Amiodarone-induced thyroid gland dysfunctions].

N Gassanov¹, M Dietlein, E Caglayan

¹Klinik III für Innere Medizin, Herzzentrum der Universität zu Köln. Natig.Gassanov@uk-koeln.de

Deutsche Medizinische Wochenschrift (1946)

|April 15, 2010

Summary

This summary is machine-generated.

Amiodarone frequently impacts thyroid function, causing hypothyroidism and thyrotoxicosis. This drug-induced thyroid dysfunction is a major reason for stopping amiodarone therapy, presenting diagnostic and treatment challenges.

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Last Updated: Jun 13, 2026

Zebra II as A Novel System to Record Electrophysiological Signals in Zebrafish

Zebra II as A Novel System to Record Electrophysiological Signals in Zebrafish

Published on: August 16, 2024

Area of Science:

Endocrinology
Cardiology

Context:

Amiodarone is a widely used antiarrhythmic drug.
Thyroid dysfunction is a common side effect of amiodarone treatment.

Purpose:

To describe amiodarone-induced thyroid dysfunction.
To outline the diagnostic and therapeutic challenges associated with this condition.

Summary:

Amiodarone affects thyroid status in approximately 50% of patients.
It can lead to both hypothyroidism and thyrotoxicosis.
This dysfunction is a primary reason for discontinuing amiodarone therapy.

Impact:

Highlights the significant impact of amiodarone on thyroid health.
Emphasizes the need for careful patient monitoring and management.
Informs clinical practice regarding the diagnosis and treatment of amiodarone-induced thyroid dysfunction.