Journal
BIOMEDICINES
Volume 11, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/biomedicines11082299
Keywords
complications; hypocalcemia; hypoparathyroidism; risk factors; thyroid surgery
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This study analyzed the risk factors for calcium-phosphate disorders following thyroidectomy, and found that the extent of thyroid surgery and surgeon experience were the most significant factors for hypoparathyroidism. Hypocalcemia was more common than hypoparathyroidism, and it was also associated with preoperative vitamin D deficiency.
Introduction: Iatrogenic hypoparathyroidism following thyroidectomy is one of the most common complications significantly reducing patients' quality of life. Objectives: This study aimed to analyze the risk factors for calcium-phosphate disorders following thyroidectomy. Patients and methods: The study group consisted of 211 patients who underwent thyroidectomy for different conditions in 2018-2020. Demographic, clinical and surgical risk factors were analyzed against hypoparathyroidism and hypocalcemia. Results: Hypoparathyroidism occurred in 15.63% of patients, and hypocalcemia occurred in 45% of those operated on. There was statistical significance between hypoparathyroidism and the extent of thyroid surgery: thyroidectomy vs. lobectomy (p = 0.02, OR = 4.5) and surgeon experience (p = 0.016, OR = 6.9). Low preoperative PTH levels were associated with a higher incidence of hypoparathyroidism (p = 0.055, OR = 0.9). There was a statistically significant correlation between the occurrence of hypocalcemia and preoperative vitamin D deficiency (p = 0.04, OR = 3.5). Low calcium levels before surgery were associated with a higher incidence of hypocalcemia (p = 0.051, OR = 0.5). Meta-analyses of selected risk factors confirmed that the most significant factor in the incidence of hypocalcemia was a decrease in PTH levels (p < 0.001). Conclusions: The extent of thyroid surgery and the experience of the surgeon are the most significant risk factors for hypoparathyroidism. Hypocalcemia is much more common than hypoparathyroidism. Among the risk factors for hypocalcemia, in addition to the decrease in parathormone levels due to iatrogenic parathyroid damage, we should mention vitamin D deficiency in the preoperative period.
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