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Propranolol and thyroidectomy in the treatment of thyrotoxicosis.

For decades, the preparation of a hyperthyroid patient for surgery took several weeks or months utilizing thyroid blocking agents and iodine. In 1973, a preliminary report of 20 patients with hyperthyroidism treated with propranolol and thyroidectomy was presented. It was found that a thyrotoxic patient could be prepared for surgery, in an emergency, by intravenous propranolol in less than an hour, or electively by oral propranolol within 24 hours. Since then, 140 additional patients have been similarly treated. It continues to be true at this institution that propranolol, a beta-adrenergic blocking agent, effectively neutralizes the symptoms of autonomic hyperactivity, including sweating, tremor, fever, dilation of blood vessels, and increased pulse rate without significantly affecting thyroid function. An average dose of 160 mg/day was used, with a range of 40 to 320 mg/day. In none of these patients was iodine used; in fact, its use with propranolol is considered unnecessary. A subtotal, near total, or total thyroidectomy was done in all patients, resulting in a 55% incidence of hypothyroidism. There was no postoperative thyroid storm, nerve injury, or permanent hypoparathyroidism. It is believed that the administration of propranolol alone provides a rapid, safe, and effective preparation of the thyrotoxic patient for thyroidal or extrathyroidal surgical procedures during the perioperative period.[1]

References

  1. Propranolol and thyroidectomy in the treatment of thyrotoxicosis. Lee, T.C., Coffey, R.J., Currier, B.M., Ma, X.P., Canary, J.J. Ann. Surg. (1982) [Pubmed]
 
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