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Revista argentina de cirugía

versão impressa ISSN 2250-639Xversão On-line ISSN 2250-639X

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LAXAGUE, Francisco et al. Risk factors for severe hypocalcemia after total thyroidectomy. Rev. argent. cir. [online]. 2020, vol.112, n.1, pp.9-15. ISSN 2250-639X.

Background: Hypocalcemia is the most common complication after a total thyroidectomy. It may occur as biochemical hypocalcemia, or with mild or severe symptoms. Objectives: The aim of this study was to analyze the risk factors associated with the development of severe hypocalcemia after total thyroidectomy. Material and methods: Patients undergoing primary total thyroidectomy were included. The risk factors for the development of severe hypocalcemia (signs and symptoms requiring hospitalization and treatment with intravenous calcium or persistence of signs and symptoms after 48 hours of initial oral treatment) were analyzed. The evaluation included analysis of the demographic, clinical, surgical and histopathological variables. Results: Of 1665 thyroid resections performed between 2007 and 2018, 918 corresponded to primary total thyroidectomies; 203 (22%) of these patients developed hypocalcemia. Mild hypocalcemia occurred in 183 (20%) cases and sever hypocalcemia in 20 (2%) patients, The univariate analysis showed that a procedure performed by head and neck surgeons, thyroid gland weight > 30 g, resection of the parathyroid glands and thyroid cancer were associated with the development of severe hypocalcemia. On multivariate analysis, the last three variables were risk factors significantly associated with this complication. Conclusions: In our series, noticed or inadvertent resection of the parathyroid glands with subsequent reimplantation, high weight of the thyroid gland and malignancy were identified as risk factors for the development of severe hypocalcemia after total thyroidectomy. Therefore, we should pay special attention to the development of such complication in the postoperative period.

Palavras-chave : Hipocalcemia; Factores de riesgo; Complicación; Tiroidectomía total; Hypocalcemia; Risk factors; Complication; Total thyroidectomy.

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