Feline hyperthyroidism SA

What are common presenting signs of feline hyperthyroidism?

Goitre, increased appetite with weight loss/muscle wasting, hyperactivity, reduced tolerance to stress, vomiting and diarrhea (V+, D+), PUPD, tachycardia, cardiac murmur, and hypertension.

What is the primary diagnostic test for feline hyperthyroidism?

Total T4 is the primary diagnostic test; if positive, it confirms hyperthyroidism, but it has low sensitivity.

What is the advantage of Free T4 testing in diagnosing hyperthyroidism?

Free T4 is more sensitive as it measures unbound T4 but has a higher chance of false positives.

What is the curative treatment option for feline hyperthyroidism?

Radioactive iodine treatment, which is a single SC injection but requires 2 weeks of hospitalization and isolation.

What is a surgical treatment option for feline hyperthyroidism?

Surgery is curative but relies on good anatomical knowledge and carries the risk of removing the parathyroid gland.

What is the primary challenge with anti-thyroid medication in cats?

Anti-thyroid medications are not curative; they reduce thyroid hormone production, requiring lifelong administration.

What dietary management is recommended for feline hyperthyroidism?

A specific low-iodine diet helps to reduce thyroid hormone production, but it is low in protein and requires monitoring of body condition score (BCS).

What should be monitored in long-term management after surgery for feline hyperthyroidism?

Regular re-examination for parathyroid-related problems and unmasking of kidney disease.

What should be monitored in cats treated with radioactive iodine?

Monitoring for unmasking kidney disease and iatrogenic hypoT4.

What are some adverse effects of anti-thyroid medication in cats?

Adverse effects may include anorexia, vomiting, lethargy, facial/neck excoriation, and more severe issues such as hepatopathy, leukemia, or anemia.

What is PUPD in the context of feline hyperthyroidism?

PUPD stands for polyuria (increased urination) and polydipsia (increased thirst).

What does TT4 measure in the diagnosis of hyperthyroidism?

TT4 measures total thyroxine levels, helping to assess thyroid function.

Why is regular re-examination important in managing feline hyperthyroidism?

It ensures ongoing assessment of weight, nutrition, and thyroid function.

How can feline hyperthyroidism affect stress tolerance?

Cats may have a reduced tolerance to stress as a presenting sign.

What type of medication is used in the anti-thyroid treatment for hyperthyroidism?

Anti-thyroid medication comes in various forms, effective in reducing thyroid hormone production.

What is the significance of measuring body condition score (BCS) in dietary management?

It helps to monitor the health and nutritional status of cats on a low-iodine diet.

What might a high Total T4 level indicate in cats?

A high Total T4 level typically indicates feline hyperthyroidism.

What is the role of nutritional assessment in managing feline hyperthyroidism?

Nutritional assessment helps in evaluating dietary needs and overall health of the cat.

How does hyperactivity present in cats with hyperthyroidism?

Cats may exhibit increased activity levels as a sign of hyperthyroidism.

What might be a required action if a cat shows side effects from anti-thyroid medication?

Veterinary checks on blood levels and blood pressure should be carried out.