Hypothyroidism - Primary
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Treatment
The purpose of treatment is to replace the deficient thyroid hormone. Levothyroxine (T4) is the most commonly used medication, but a preparation of T3 is also available. Most people feel their best when TSH is brought into the 1 to 2 mcIU/mL range. The lowest dose effective in relieving symptoms is given.
Life-long therapy is needed as relapses will occur if therapy is interrupted. Medication must be continued even when symptoms subside.
After replacement therapy has begun, report any symptoms of increased thyroid activity (hyperthyroidism), such as restlessness, rapid weight loss, heat intolerance, and sweating.
Myxedema coma is treated by intravenous thyroid replacement and steroid therapy. Supportive therapy of oxygen, assisted ventilation, fluid replacement, and intensive care nursing may be indicated.
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