Vitamin D Supplementation to Prevent Post-Thyroidectomy Hypocalcemia.

Area of Science:

• Endocrinology
• Surgical Complications
• Nutritional Science

Background:

• Hypocalcemia is a common complication after thyroidectomy.
• Previous studies on vitamin D3's efficacy have yielded inconsistent results, potentially due to geographical and dietary differences.

Purpose of the Study:

• To investigate the effect of preoperative vitamin D3 supplementation on post-thyroidectomy hypocalcemia in a Dutch population.
• To address inconsistencies in previous research by focusing on a specific European cohort.

Main Methods:

• An observational study comparing thyroidectomy patients receiving 100,000 IU vitamin D3 one week pre-surgery to a historical control group without supplementation.
• Outcomes assessed included hypocalcemia incidence, need for postoperative supplementation, time to normocalcemia, hospital stay, and readmissions.

Main Results:

• Vitamin D3 supplementation was linked to a significantly lower risk of biochemical hypocalcemia (OR 0.28, p=0.005).
• The vitamin D3 group showed reduced need for postoperative supplementation (32.0% vs 53.9%, p=0.007) and faster recovery from hypocalcemia (0 vs 3 days, p=0.002).
• No significant differences were found in hospital stay duration or readmission rates.

Conclusions:

• Preoperative vitamin D3 supplementation appears to significantly reduce post-thyroidectomy hypocalcemia in this Dutch cohort.
• While larger randomized trials are warranted, the low cost and demonstrated efficacy suggest considering routine preoperative vitamin D3 for thyroidectomy patients.