Hyperthyroidism - FF Article Flashcards
What is the most common feline endocrinopathy?
Hyperthyroidism is the most common feline endocrinopathy, with diabetes mellitus a close second.
At what age is hyperthyroidism most commonly diagnosed?
Hyperthyroidism is most commonly diagnosed in cats around 12 to 13 years.
What clinical signs are typically associated with hyperthyroidism?
Common signs include weight loss, polyphagia, vomiting, polydipsia, polyuria, and increased activity.
What is a common physical examination finding in hyperthyroid cats?
Palpable goitre is found in about 83% of hyperthyroid cats.
What percentage of hyperthyroid cats exhibit weight loss?
Around 88% of hyperthyroid cats experience weight loss.
How is hyperthyroidism typically diagnosed?
Diagnosis is confirmed by elevated serum total T4 levels.
What should be done if total T4 levels are normal but hyperthyroidism is suspected?
Repeat the test or measure free T4 by equilibrium dialysis.
What are the main treatment options for hyperthyroidism in cats?
The four options include antithyroid medication, iodine-restricted diet, surgical thyroidectomy, and radioiodine therapy.
What is a major disadvantage of antithyroid medications?
Lifelong treatment is required, and there are potential side effects like anorexia, vomiting, and hepatopathy.
How does a low-iodine diet manage hyperthyroidism?
The iodine-restricted diet reduces thyroid hormone production by limiting iodine intake.
What are the advantages of radioiodine therapy for hyperthyroidism?
Radioiodine therapy is curative, safe for adjacent tissues, and has a 95% success rate.
Why is surgical thyroidectomy considered curative?
It involves removing the abnormal thyroid tissue, eliminating the need for medication.
What is the most serious risk associated with surgical thyroidectomy?
Hypoparathyroidism, due to damage to the parathyroid glands, which can lead to hypocalcemia.
Why might hyperthyroidism treatment worsen kidney function?
Treatment reduces the hyperthyroid-induced increased renal blood flow, potentially unmasking underlying kidney disease.
