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Updated: Jan 16, 2026

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
Published on: July 14, 2023
Development and Validation of a Prognostic Model for Persistent Hypoparathyroidism After Total or Completion
Sam P J van Dijk1, Carolien C H M Maas2,3, Ali Alshangi1
1Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.
Background:
The aim of this study was to develop and validate a clinical prediction model to predict the occurrence of persistent hypoparathyroidism after total or completion thyroidectomy.
Methods:
This multicentre retrospective cohort study included patients who underwent total or completion thyroidectomy between January 2010 and June 2021 in 12 Dutch hospitals.
Results:
Of the 366 patients included, 44 (12.0%) patients developed persistent hypoparathyroidism in the first year follow-up after surgery. Multivariable logistic regression analysis showed that ΔPTH the day after surgery, corrected calcium the day after surgery, and not identifying at least one parathyroid during surgery were strong predictors for persistent hypoparathyroidism. The discriminative ability of the model was excellent (optimism-corrected C-index: 0.88, 95% CI: 0.84-0.92) with moderately calibrated predictions.
Conclusions:
The model proposed in this study could be used to perform an individual assessment of patients at risk for persistent hypoparathyroidism after total thyroidectomy.

