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Prediction of permanent hypoparathyroidism after total thyroidectomy
M Almquist1, P Hallgrimsson, E Nordenström
1Department of Surgery, Skane University Hospital, Lund, Sweden, martin.almquist@med.lu.se.
World Journal of Surgery
|May 6, 2014
Summary
Predicting permanent hypoparathyroidism after thyroid surgery is crucial. Low parathyroid hormone (PTH) levels on day one post-surgery indicate a high risk, while auto-transplantation protects patients.
Area of Science:
- Endocrinology
- Surgical Complications
- Thyroid Surgery Outcomes
Background:
- Hypoparathyroidism is a frequent complication following thyroid surgery.
- Predicting permanent hypoparathyroidism is vital for patient prognosis and management.
Purpose of the Study:
- To identify predictors of permanent hypoparathyroidism after total thyroidectomy.
- To assess the role of parathyroid hormone (PTH) levels and auto-transplantation in predicting outcomes.
Main Methods:
- Investigated permanent hypoparathyroidism (defined as 1-year vitamin D dependence) in 519 total thyroidectomy patients.
- Measured serum calcium and PTH intra-operatively, day 1, and 1 month post-op.
- Used logistic regression to determine odds ratios (ORs) for permanent hypoparathyroidism risk.
Main Results:
- Permanent hypoparathyroidism occurred in 1.9% of patients.
- No patients with auto-transplanted parathyroid glands or normal day 1 PTH (>1.6 pmol/l) developed permanent hypoparathyroidism.
- Low day 1 PTH (<0.7 pmol/l) in non-auto-transplanted patients was associated with a 19.2% risk of permanent hypoparathyroidism.
Conclusions:
- Parathyroid auto-transplantation is protective against permanent hypoparathyroidism.
- Low day 1 PTH levels are a significant risk factor for developing permanent hypoparathyroidism after thyroidectomy.
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