Amiodarone induced myxedema coma: Two case reports and literature review

Abstract

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. Our two case reports are an add on to the literature, and illustrate that amiodarone is an important cause of thyroid dysfunction including hypothyroidism and myxedema coma. Hence, healthcare providers should have a high index of suspicion for these conditions while treating patients who are taking amiodarone therapy as early recognition and management are essential to optimize outcomes.

Keywords: Amiodarone; Myxedema Coma; Thyroid.