What is the initial management step for myxedema coma?

• A. Oral levothyroxine
• B. Hydrocortisone only
• C. Urgent IV thyroid hormone replacement (levothyroxine) and supportive care; also consider hydrocortisone
• D. Observation

Answer: (C)

Myxedema coma is a life-threatening emergency that requires rapid stabilization and replacement of thyroid hormone. In this critical state, the gut often cannot absorb oral meds reliably, so giving thyroid hormone intravenously ensures fast and predictable replacement. The initial move is urgent IV thyroid hormone replacement, typically with IV levothyroxine, along with aggressive supportive care (airway management if needed, ventilation support, IV fluids, glucose if hypoglycemic, temperature control, and correction of electrolyte disturbances). Because adrenal insufficiency can accompany prolonged hypothyroidism and may not be immediately evident, starting hydrocortisone empirically protects against an adrenal crisis when introducing thyroid hormone. This combination addresses both the thyroid deficiency and potential adrenal weakness while the patient is stabilized and a precipitating cause is identified.

Opting for hydrocortisone alone misses the essential thyroid hormone replacement, and relying on observation alone fails to treat this immediately life-threatening condition.