Hypocalcaemia following thyroidectomy unresponsive to oral therapy

Area of Science:

• Endocrinology
• Calcium Metabolism
• Thyroid Surgery

Background:

• Hypocalcaemia is a common complication post-thyroidectomy, typically managed with calcium and vitamin D.
• Resistance to standard oral calcium and vitamin D therapy is infrequent.

Observation:

• A patient with a complex medical history presented with hypoparathyroidism post-thyroidectomy.
• This patient was unresponsive to conventional oral calcium and vitamin D replacement therapy.

Findings:

• Potential causes for treatment resistance were explored, including adherence, hungry bone syndrome, malabsorption, vitamin D resistance, bisphosphonate use, and magnesium deficiency.
• Intestinal hurry-induced malabsorption was identified as a likely contributing factor.
• Very high doses of oral therapy were necessary to manage symptomatic hypocalcaemia.

Implications:

• This case underscores the importance of considering malabsorption in refractory hypocalcaemia following thyroidectomy.
• It highlights the need for individualized treatment adjustments in complex cases of post-surgical hypoparathyroidism.
• Effective management of refractory hypocalcaemia may require significantly escalated therapeutic interventions.