What in the preoperative preparation for thyroidectomy in patients with Graves disease?

Updated: Mar 23, 2018
  • Author: Sai-Ching Jim Yeung, MD, PhD, FACP; Chief Editor: Romesh Khardori, MD, PhD, FACP  more...
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Answer

Procedures and preparations are as follows:

  • Preoperative preparation to render the patient euthyroid is essential in order to prevent thyrotoxic crisis (thyroid storm). The hyperthyroid state can be rapidly corrected using a combination of iopanoic acid, dexamethasone, beta-blockers, and thioamides. [76, 77]

  • This can be accomplished with the use of antithyroid drugs for approximately 6 weeks, with or without concomitant beta-blockade.

  • Most surgeons administer iodine (as Lugol solution or saturated solution of potassium iodide to provide ≥30 mg of iodine/d) for 10 days before surgery to decrease thyroid gland vascularity, the rate of blood flow, and intraoperative blood loss during thyroidectomy. [78, 79, 80]

  • With experienced surgeons, vocal cord paralysis due to superior or recurrent laryngeal nerve injury and hypoparathyroidism are rare adverse events, occurring in less than 1% of patients.

  • Subtotal thyroidectomy is usually used with the intention of leaving enough thyroid remnants behind to avoid hypothyroidism.

  • Importantly, keep in mind that the risk of recurrent hyperthyroidism potentially increases with larger remnant sizes. However, many studies have shown that the size of the remnant is not the only determinant of the risk of recurrence.

  • Iodine uptake and immunologic activity (eg, level of TSI) are just 2 of the other factors that influence the risk of recurrent hyperthyroidism.

  • If the goal of surgery is to avoid recurrent hyperthyroidism, near-total thyroidectomy has been advocated as the procedure of choice.

  • Regardless of the extent of surgery, all patients require long-term follow-up.


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