Bilateral thyroidectomy for feline hyperthyroidism offers potential cure but carries risks of hypoparathyroidism causing fatal hypocalcemia, making surgical expertise and post-operative monitoring essential welfare considerations.
Thyroidectomy welfare centers on the risk of hypoparathyroidism - an iatrogenic complication that can be more immediately life-threatening than the hyperthyroidism being treated. The transition from hyperthyroid to hypocalcemic can occur within hours of surgery, causing acute neurological signs and cardiac arrhythmias. Welfare-optimal surgical management requires experienced surgeons, peri-operative calcium monitoring protocols, and owner education about early hypocalcemia recognition. The alternative treatments (radioiodine, medical management) avoid this specific risk, making the relative welfare comparison between treatment options an important part of the informed consent discussion for hyperthyroid cat owners.