Abstract
Postoperative hypocalcemia is the most frequent complication of total thyroidectomy. It may have a delayed onset, and therefore delays the discharge from the hospital, requiring calcium replacement therapy to alleviate clinical symptoms. During a 7-month period, 2,631 consecutive patients undergoing primary or completion thyroidectomy were prospectively followed up and underwent analysis regarding postoperative hypoparathyroidism. Data were prospectively collected by questionnaires from 39 Italian endocrine surgery units affiliated to the Italian Endocrine Surgery Units Association (Club delle Unità di EndocrinoChirurgia—UEC), where thyroid surgery is routinely performed. The incidence of hypoparathyroidism was 28.8 % (757 patients), including transient hypocalcemia (27.9 %—734 patients) and permanent hypocalcemia (0.9 %—23 patients). The rate of asymptomatic hypocalcemia was 70.80 %. The incidence of permanent hypocalcemia was higher in the symptomatic hypocalcemia group (7.5 %) than in asymptomatic one (1.5 %). Female patients experienced a transient postoperative hypocalcemia more frequently than male patients (29.7 and 21.2 %, respectively; p < 0.0001). The percentage developing hypocalcemia in patients in which parathyroid glands were intraoperatively identified and preserved was higher than in the patients in which the identification of parathyroid glands was not achieved (29.2 vs. 18.7 %, p < 0.01). This prospective study confirmed the main risk factors for postoperative hypocalcemia: thyroid cancer, nodal dissection, and female gender. It farther showed that identifying parathyroids has an important role to prevent permanent hypocalcemia though with a higher risk of transient hypocalcemia. A suitable informed consent should especially emphasize the importance of some primary factors in increasing the risk of hypocalcemia after thyroid surgery.
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F. Pattou, F. Combemale, S. Fabre, B. Carnaille, M. Decoulx, J.L. Wemeau, A. Racadot, C. Proye, Hypocalcemia following thyroid surgery: incidence and prediction of outcome. World J. Surg. 22, 718–724 (1998)
M. Costanzo, A. Marziani, F. Condorelli, M. Migliore, M.A. Cannizzaro, Post-thyroidectomy hypocalcemic syndrome: predictive value of early PTH. Preliminary results. Ann. Ital. Chir. 81, 301–305 (2010)
T. Reeve, N.W. Thompson, Complications in thyroid surgery: how to avoid them, how to manage them and observations on their possible efficacy on the whole patient. World J. Surg. 24, 971–975 (2000)
R.D. Bliss, P.G. Gauger, L.W. Delbridge, Surgeon’s approach to the thyroid gland: surgical anatomy and the importance of technique. World J. Surg. 24, 891–897 (2000)
A.R. Shaha, B.M. Jaffe, Parathyroid preservation during thyroid surgery. Am. J. Otolaryngol. 19, 113–117 (1998)
A. Trupka, W. Sienel, Autotransplantation of at least one parathyroid gland during thyroidectomy in benign thyroid disease minimized the risk of permanent hypoparathyroidism. Zentrabl. Chir. 127, 439–442 (2002)
R. Gervasi, G. Orlando, M.A. Lerose, B. Amato, G. Docimo, P. Zeppa, A. Puzziello, Thyroid surgery in geriatric patients: a literature review. BMC Surg. 12(Suppl 1), S16 (2012)
A.R. Zambudio, J. Rodríguez, J. Riquelme, T. Soria, M. Canteras, P. Parrilla, Prospective study of postoperative complications after total thyroidectomy for multinodular goiters by surgeons with experience in endocrine surgery. Ann. Surg. 24, 18–25 (2004)
L. Rosato, N. Avenia, P. Bernante, M. De Palma, G. Gulino, P.G. Nasi, M.R. Pelizzo, L. Pezzullo, Complications of thyroid surgery: analysis of a multicentric study on 14,934 patients operated on in Italy over 5 years. World J. Surg. 28, 271–276 (2004)
O. Cavicchi, O. Piccin, U. Caliceti, A. De Cataldis, R. Pasquali, A.R. Ceroni, Transient hypoparathyroidism following thyroidectomy: a prospective study and multivariate analysis of 604 consecutive patients. Otolaryngol. Head Neck Surg. 137, 654–658 (2007)
N.E. Cusano, M.R. Rubin, J. Sliney Jr, J.P. Bilezikian, Mini-review: new therapeutic options in hypoparathyroidism. Endocrine 41, 410–414 (2012)
J.L. Roh, C.I. Park, Routine oral calcium and vitamin D supplements for prevention of hypocalcemia after total thyroidectomy. Am. J. Surg. 192, 675–678 (2006)
A. Duclos, J.L. Peix, C. Colin, J.L. Kraimps, F. Menegaux, F. Pattou, F. Sebag, S. Touzet, S. Bourdy, N. Voirin, J.C. Lifante, CATHY Study Group, Influence of experience on performance of individual surgeons in thyroid surgery: prospective cross sectional multicentre study. BMJ 344, 8041 (2012)
K.M. Higgins, D.L. Mandell, S. Govindaraj, E.M. Genden, J.I. Mechanick, D.A. Bergman, E.J. Diamond, M.L. Urken, The role of Intraoperative rapid parathyroid hormone monitoring for predicting thyroidectomy related hypocalcemia. Arch. Otoryngol. Head Neck Surg. 130, 63–67 (2004)
G. Conzo, D. Pasquali, G. Bellastella, K. Esposito, C. Carella, A. De Bellis, G. Docimo, M. Klain, S. Iorio, S. Napolitano, A. Palazzo, A. Pizza, A.A. Sinisi, E. Zampella, A. Bellastella, L. Santini, Total thyroidectomy, without prophylactic central lymph node dissection, in the treatment of differentiated thyroid cancer. Clinical retrospective study on 221 cases. Endocrine 44, 419–425 (2013)
P. Aluffi, E. Aina, T. Bagnati, A. Toso, F. Pia, Prognostic factors for definitive hypoparathyroidism following total thyroidectomy. Acta Otorinolaringol Esp. 59, 321–324 (2008)
M. Testini, L. Rosato, N. Avenia, F. Basile, P. Portincasa, G. Piccinni, G. Lissidini, A. Biondi, A. Gurrado, M. Nacchiero, The impact of single parathyroid autotransplantation during thyroid surgery on postoperative hypoparathyroidism: a multicenter study. Transp. Proc. 39, 225–230 (2007)
L. Rosato, G. De Toma, R. Bellantone, N. Avenia, G. Cavallaro, C. Dobrinja, M.G. Chiofalo, C. De Crea, M. De Palma, G. Gasparri, A. Gurrado, C. Lombardi, P. Miccoli, B. Mullineris, P.G. Nasi, M.R. Pelizzo, L. Pezzullo, G. Perigli, M. Testini, Associazione delle Unità di Endocrinochirurgia Italiana, Diagnostic, therapeutic and healthcare management protocols in thyroid surgery: 3rd Consensus Conference of the Italian Association of Endocrine Surgery Units (U.E.C. CLUB). Minerva Chir. 67, 365–379 (2012)
R.D. Bliss, P.G. Gauger, L.W. Delbridge, Surgeon’s approach to the thyroid gland: surgical anatomy and the importance of technique. World J. Surg. 24, 891–897 (2000)
G. Cocchiara, M. Cajozzo, G. Amato, A. Mularo, A. Agrusa, G. Romano, Terminal ligature of inferior thyroid artery branches during total thyroidectomy for multinodular goiter is associated with higher postoperative calcium and PTH levels. J. Visc. Surg. 147, e329–e332 (2010)
N.B. Sands, R.J. Payne, V. Côté, M.P. Hier, M.J. Black, M. Tamilia, Female gender as a risk factor for transient post-thyroidectomy hypocalcemia. Otolaryngol. Head Neck Surg. 145, 561–564 (2011)
G. Docimo, S. Tolone, D. Pasquali, G. Conzo, A. D’Alessandro, G. Casalino, S. Gili, L. Brusciano, A. Gubitosi, G. Del Genio, R. Ruggiero, L. Docimo, Role of pre and post-operative oral calcium and vitamin D supplements in prevention of hypocalcemia after total thyroidectomy. G. Chir. 33, 374–378 (2012)
G. Docimo, S. Tolone, R. Ruggiero, A. Gubitosi, D. Pasquali, A. De Bellis, P. Limongelli, G. Del Genio, L. Docimo, G. Conzo, Total thyroidectomy without prophylactic central neck dissection combined with routine oral calcium and vitamin D supplements: is it a good option to achieve a low recurrence rate avoiding hypocalcemia? A retrospective study. Minerva Chir. 68, 321–328 (2013)
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Puzziello, A., Rosato, L., Innaro, N. et al. Hypocalcemia following thyroid surgery: incidence and risk factors. A longitudinal multicenter study comprising 2,631 patients. Endocrine 47, 537–542 (2014). https://doi.org/10.1007/s12020-014-0209-y
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DOI: https://doi.org/10.1007/s12020-014-0209-y