Endocrine and Metabolic Dysfunction Syndromes in the Criti..

Alterations in thyroid function occur commonly in critically ill patients; however, they are rarely the primary cause of admission to the intensive care unit (ICU). In this article, the management of patients in whom abnormal thyroid function is the principal cause for ICU management is discussed. These individuals have either severe hypothyroidism or hyperthyroidism, syndromes that require ICU monitoring that are associated with high rates of in-hospital mortality. Early recognition and treatment are critical to successful management. Thyroid function tests, with a focus on the tests that are most relevant for patients with suspected severe thyroid function abnormalities, are discussed, followed by the clinical presentation and management of each disorder.