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Hypoparathyroidism after total thyroidectomy in patients with previous gastric bypass
Skåne University Hospital, Lund, Sweden.
Orebro University Hospital. University Örebro, Faculty Medicine & Health, Department of Surgery, Örebro, Sweden.
Gothenburg University, Gothenburg, Sweden.
Akademiska sjukhuset, Uppsala, Sweden.
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2017 (English)In: Langenbeck's archives of surgery (Print), ISSN 1435-2443, E-ISSN 1435-2451, Vol. 402, no 2, 273-280 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE: Case reports suggest that patients with previous gastric bypass have an increased risk of severe hypocalcemia after total thyroidectomy, but there are no population-based studies. The prevalence of gastric bypass before thyroidectomy and the risk of hypocalcemia after thyroidectomy in patients with previous gastric bypass were investigated.

METHODS: By cross-linking The Scandinavian Quality Registry for Thyroid, Parathyroid and Adrenal Surgery with the Scandinavian Obesity Surgery Registry patients operated with total thyroidectomy without concurrent or previous surgery for hyperparathyroidism were identified and grouped according to previous gastric bypass. The risk of treatment with intravenous calcium during hospital stay, and with oral calcium and vitamin D at 6 weeks and 6 months postoperatively was calculated by using multiple logistic regression in the overall cohort and in a 1:1 nested case-control analysis.

RESULTS: We identified 6115 patients treated with total thyroidectomy. Out of these, 25 (0.4 %) had undergone previous gastric bypass surgery. In logistic regression, previous gastric bypass was not associated with treatment with i.v. calcium (OR 2.05, 95 % CI 0.48-8.74), or calcium and/or vitamin D at 6 weeks (1.14 (0.39-3.35), 1.31 (0.39-4.42)) or 6 months after total thyroidectomy (1.71 (0.40-7.32), 2.28 (0.53-9.75)). In the nested case-control analysis, rates of treatment for hypocalcemia were similar in patients with and without previous gastric bypass.

CONCLUSION: Previous gastric bypass surgery was infrequent in patients undergoing total thyroidectomy and was not associated with an increased risk of postoperative hypocalcemia.

Place, publisher, year, edition, pages
Springer-Verlag New York, 2017. Vol. 402, no 2, 273-280 p.
Keyword [en]
Cohort study, Gastric bypass, Postoperative hypoparathyroidism, Total thyroidectomy
National Category
Surgery
Research subject
Surgery
Identifiers
URN: urn:nbn:se:oru:diva-57424DOI: 10.1007/s00423-016-1517-xISI: 000397297900011PubMedID: 27783154ScopusID: 2-s2.0-84992337493OAI: oai:DiVA.org:oru-57424DiVA: diva2:1090894
Note

Funding agancies

Skane University Hospital  

The Anna Lisa and Sven-Erik Lundgren Foundation for Medical Research  

Southern Health Care Region Grants  

Novartis Health Alliance 

Available from: 2017-04-25 Created: 2017-04-25 Last updated: 2017-04-25Bibliographically approved

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Citation style
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