July 2012
Anesthesiology
Peer Reviewed

You have asked…What is the best approach for anesthetizing patients with thyroid gland disease?

The expert explains…

What is the suggested protocol for patients with hypothyroidism?

Hypothyroidism is recognized commonly in dogs; in cats, hypothyroidism is usually iatrogenic (secondary to treatment of hyperthyroidism). In addition to the common clinical picture of hypothyroidism (dull hair coat, hair loss, mental dullness, weight gain), additional conditions may influence anesthetic management, such as laryngeal paralysis and megaesophagus. Laboratory findings typically include hypercholesterolemia, and nonregenerative, normochromic, normocytic anemia may be diagnosed in up to 40% of patients. Many tests (total and free T4, TSH stimulation, T3, reverse T3, TRH response) are available for evaluating thyroid function and may be used to confirm diagnosis based on clinical and initial (routine) laboratory findings.


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