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Hyperthyroxinemia after surgery for primary hyperparathyroidism

A Bergenfelz1, B Ahrén

  • 1Department of Surgery, Lund University, Sweden.

Langenbecks Archiv Fur Chirurgie
|January 1, 1994
PubMed
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Transient thyrotoxicosis after primary hyperparathyroidism surgery is common. Postoperative thyroid hormone levels correlate with parathyroid hormone, suggesting the disease, not surgical trauma, may be the cause.

Area of Science:

  • Endocrinology
  • Surgical Endocrinology

Background:

  • Transient thyrotoxicosis post-primary hyperparathyroidism surgery is documented.
  • Surgical trauma to the thyroid has been proposed as the cause.

Purpose of the Study:

  • To investigate pre- and postoperative thyroid hormone levels in patients undergoing primary hyperparathyroidism surgery.
  • To explore potential etiologies of transient thyrotoxicosis in this context.

Main Methods:

  • Serum thyroid hormone levels (T4) were measured preoperatively and on the fourth postoperative day.
  • Twenty patients with primary hyperparathyroidism were included.
  • Correlation analysis between T4 and parathyroid hormone (PTH) levels was performed.

Main Results:

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  • Mean serum T4 levels increased significantly from preoperative to postoperative measurements (P < 0.01).
  • Twenty percent (4/20) of patients exhibited biochemical thyrotoxicosis post-surgery.
  • Postoperative T4 levels strongly correlated with preoperative PTH levels (r = 0.75; P < 0.001).
  • Conclusions:

    • Biochemical thyrotoxicosis is a frequent finding after primary hyperparathyroidism surgery.
    • The observed thyrotoxicosis is likely linked to the underlying disease (primary hyperparathyroidism) rather than surgical trauma.
    • Further research into the thyroid-parathyroid hormonal interplay is warranted.