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Updated: Jan 25, 2026
08:06
Mixed Reality Assisted Radical Endoscopic Thyroidectomy
Published on: January 31, 2025
685
Identifying Predictors of Prolonged Levothyroxine Dose Adjustment After Thyroidectomy
Tenzin S Atruktsang1, Nick A Zaborek1, Joseph R Imbus1
1Department of Surgery, University of Wisconsin, K6/100E Clinical Science Center, Madison, Wisconsin.
The Journal of Surgical Research
|May 13, 2019
Summary
Achieving stable thyroid hormone levels after thyroidectomy can take months. Supplementing with iron or multivitamins may prolong this adjustment period, impacting patient recovery and thyroid hormone management.
Area of Science:
- Endocrinology
- Pharmacology
- Thyroidology
Background:
- Levothyroxine (LT4) is a common treatment post-thyroidectomy.
- Patients often experience thyroid dysfunction before achieving euthyroidism.
- Predicting and understanding prolonged dose adjustment is crucial for patient care.
Purpose of the Study:
- To determine the time to achieve euthyroidism after thyroidectomy.
- To identify factors associated with prolonged dose adjustment (PDA+) in LT4 therapy.
Main Methods:
- Retrospective cohort study of 605 patients treated with LT4 post-thyroidectomy.
- Defined PDA+ as needing at least three LT4 dose adjustments.
- Used logistic regression to identify predictors of PDA+.
Main Results:
- Median time to euthyroidism was 116 days.
- Patients with PDA+ took a median of 271 days to achieve euthyroidism.
- Iron and multivitamin/mineral supplementation were independently associated with PDA+.
Conclusions:
- Euthyroidism after thyroidectomy can take up to 4 months.
- Supplement use (iron, multivitamins) may predict prolonged LT4 dose adjustment.
- Findings can inform patient counseling and potentially expedite thyroid hormone normalization.
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