Does Parathyroid Autotransplantation Prevent Hypoparathyroidism After Thyroid Surgery?

Area of Science:

• Endocrinology
• Surgical Oncology
• Thyroid Surgery

Background:

• Hypoparathyroidism is a common complication after thyroidectomy due to parathyroid gland devascularization or injury.
• Parathyroid autotransplantation is a technique used to preserve parathyroid function and prevent permanent hypoparathyroidism.
• Limited comprehensive evidence exists on the efficacy of parathyroid autotransplantation in routine clinical practice.

Purpose of the Study:

• To evaluate the impact of parathyroid autotransplantation on parathyroid function recovery in patients experiencing hypoparathyroidism post-thyroidectomy.
• To compare surgical outcomes between patients who underwent parathyroid autotransplantation and those who did not.

Main Methods:

• A retrospective analysis of 549 patients undergoing total or completion thyroidectomy between December 2015 and June 2023.
• Comparison of surgical outcomes, including intraoperative identification rates and postoperative hypocalcemia.
• Subgroup analysis of patients with post-anesthesia care unit (PACU) parathyroid hormone (PTH) levels below 10 units, utilizing Chi-squared and multivariable analyses.

Main Results:

• 152 patients (27.7%) underwent parathyroid autotransplantation; 397 (72.3%) did not. No difference in intraoperative parathyroid identification.
• Autotransplanted patients had a higher incidence of transient symptomatic hypocalcemia at 2 weeks (38.0% vs. 19.3%, P<0.001).
• Among patients with PACU PTH < 10 units, parathyroid function recovery rates were similar (82.2% vs. 82.5%, P=0.46), as was long-term parathyroid insufficiency (5.3% vs. 3.8%, P=0.46).

Conclusions:

• Parathyroid autotransplantation does not enhance parathyroid function recovery in hypoparathyroid patients post-thyroidectomy.
• The procedure does not significantly alter outcomes, including functional recovery, in patients with low PACU PTH levels.
• Routine parathyroid autotransplantation may not be beneficial for improving outcomes in this patient population.