What are any possible adverse effects or complications from radioactive iodine?
Hypothyroidism can occur in 1% of the patients that are more sensitive to the iodine treatment. These cats are placed on thyroid supplement and do well. Renal failure is seen in about 2% of the cases in which the kidneys are not perfused as well as they were in the cat with a racing heart and hypertension. The renal failure can be treated with diet or with fluids.
