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Hypocalcemia is a common problem after parathyroidectomy and/or thyroidectomy. The complication may be transient or permanent. Most cases occur as a result of removal of the parathyroid glands or damage to the glands during neck surgery. The purpose of this study was to evaluate the effect of preoperative vitamin D deficiency in predicting transient hypocalcemia and hypoparathyroidism after parathyroidectomy.Retrospective evaluation was made of 180 patients with primary hyperparathyroidism in respect of serum 25(OH)D, calcium and parathyroid hormone before and after parathyroidectomy. Transient hypocalcemia was defined as corrected calcium ≤ 8.4 mg/dL, and these cases were then evaluated for preoperative 25(OH)D values. Transient hypoparathyroidism has been described as low PTH level immediately after surgery before beginning any supplementation. Permanent hypoparathyroidism is accepted as the need for medical treatment is necessary over 12 months.Both transient hypocalcemia and hypoparathyroidism developed at statistically significantly higher rates in patients with preoperative vitamin D deficiency and vitamin D insufficiency.Vitamin D deficiency is an independent contributor to transient hypocalcemia and hypoparathyroidism following parathyroidectomy.

Preoperative Vitamin D Levels as a Predictor of Transient Hypocalcemia and Hypoparathyroidism After Parathyroidectomy