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Updated: Jan 26, 2026

Mixed Reality Assisted Radical Endoscopic Thyroidectomy
Published on: January 31, 2025
Reliable early prediction for different types of post-thyroidectomy hypocalcemia
Joon Ho Kim1, Man Ki Chung, Young-Ik Son
1Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Post-thyroidectomy hypocalcemia can be symptomatic or biochemical. Intact parathyroid hormone (PTH) predicts symptomatic cases, while day-1 ionized calcium predicts biochemical hypocalcemia, aiding safe early discharge decisions.
Area of Science:
- Endocrinology
- Surgical Oncology
- Clinical Chemistry
Background:
- Post-thyroidectomy hypocalcemia frequently delays patient discharge.
- Diverse definitions of hypocalcemia complicate interpretation of prior research.
- Early, reliable predictors are needed to manage post-thyroidectomy hypocalcemia.
Purpose of the Study:
- To analyze patterns of hypocalcemia after thyroidectomy.
- To identify reliable early predictors for different types of hypocalcemia.
- To inform safe and timely patient discharge protocols.
Main Methods:
- Retrospective review of 112 thyroidectomy patients.
- Categorization into four groups based on symptomatic and biochemical hypocalcemia.
- Evaluation of biomarker predictive values: serum calcium, ionized calcium, and intact parathyroid hormone (PTH).
Main Results:
- 62 patients (55.4%) experienced hypocalcemia.
- 45 hypocalcemic patients (72.5%) had both symptomatic and biochemical issues.
- Intact PTH at 1 hour predicted symptomatic hypocalcemia (79.7-87.4% accuracy).
- Day-1 ionized calcium predicted biochemical hypocalcemia (77.9-94.8% accuracy).
Conclusions:
- Consider both symptomatic and biochemical hypocalcemia for safe early discharge.
- Intact PTH is a reliable predictor for symptomatic hypocalcemia.
- Day-1 ionized serum calcium effectively predicts biochemical hypocalcemia.
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