Which is the most common complication after thyroidectomy in cats?

Which is the most common complication after thyroidectomy in cats?

• A. Hypocalcemia due to removal of parathyroid glands
• B. Hyperthyroidism
• C. Laryngeal paralysis
• D. Hypertension

Answer: (A)

The key idea is that calcium balance is most at risk after thyroidectomy because the parathyroid glands, which tightly sit near the thyroid, can be accidentally removed or their blood supply damaged during the operation. These tiny glands produce parathyroid hormone, which keeps calcium levels in the bloodstream stable. When their function is lost or impaired, calcium falls, causing nervous system excitability that shows up as facial twitching, muscle tremors, cramps, or seizures in the early postoperative period. Management focuses on monitoring calcium and giving supplementation as needed—calcium for immediate needs and, if necessary, calcitriol to help calcium absorption long term. The other options aren’t typical postoperative complications: hyperthyroidism is the disease being treated, not a complication after removing the thyroid; laryngeal paralysis and hypertension can occur but are less common than hypocalcemia in this context.

The key idea is that calcium balance is most at risk after thyroidectomy because the parathyroid glands, which tightly sit near the thyroid, can be accidentally removed or their blood supply damaged during the operation. These tiny glands produce parathyroid hormone, which keeps calcium levels in the bloodstream stable. When their function is lost or impaired, calcium falls, causing nervous system excitability that shows up as facial twitching, muscle tremors, cramps, or seizures in the early postoperative period. Management focuses on monitoring calcium and giving supplementation as needed—calcium for immediate needs and, if necessary, calcitriol to help calcium absorption long term. The other options aren’t typical postoperative complications: hyperthyroidism is the disease being treated, not a complication after removing the thyroid; laryngeal paralysis and hypertension can occur but are less common than hypocalcemia in this context.