Hyperthyroidism Flashcards Preview

Small Animal Internal Medicine > Hyperthyroidism > Flashcards

Flashcards in Hyperthyroidism Deck (19):
1

Hyperthyroidism is the unregulated production of what?

T4

2

What are the risk factors associated with hyperthyroidism in the cat?

1. Canned food

2. Age

3. Cat litter

4. Indoor housing

5. Lawn and flea control products

LIKELY MULTI-FACTORIAL

3

What is the typical signalment of a cat with hyperthyroidism?

1. Older than 8 years of age

2. Mean age of 13 years

3. Male (increased risk)

4

Which 2 breeds may have a DECREASED risk of developing hyperthyroidism?

1. Siamese

2. Himalayan

5

What are the clinical features of hyperthyroidism in a cat?

1. Weight loss

2. Polyphagia

3. Vomiting

4. PU/PD

5. Hyperactivity

6. Skin changes

7. Panting

8. Behavioral changes

6

What is the biggest rule out, next to hyperthyroidism, when you have a PU/PD cat losing weight?

Diabetes mellitus

7

What is the MOST COMMON clinical feature associated with hyperthyroidism in the cat?

Weight loss

8

There is a palpable thyroid in ___% of cats with hyperthyroidism.

91%

9

Which of the following is/are not cardiovascular effects associated with hyperthyroidism in the cat: (1) systolic murmur, (2) bradycardia, (3) gallop rhythm, (4) changes consistent with DCM.

1. Bradycardia

2. Changes consistent with DCM

10

What 4 cardiovascular changes would you associate with hyperthyroidism?

1. Tachycardia

2. Systolic murmur

3. Gallop rhythm

4. Changes consistent with HCM

11

What type of changes would you see on a CBC with hyperthyroidism?

1. Increased PCV

2. Increased hemoglobin

3. Increased RBC count

4. Stress leukogram (lymphopenia, eosinopenia, leukocytosis)

12

What 3 changes might you see on a biochem associated with hyperthyroidism?

1. Elevated ALT and/or ALP

2. Azotemia

3. Increased glucose

13

What change might you notice on a urinalysis associated with hyperthyroidism?

Specific gravity > 1.035

14

What type of changes might you see on ECG associated with hyperthyroidism?

1. Tachycardia

2. Increased R wave amplitude

3. Widened QRS complex

15

What change in the heart might you notice on radiograph?

Cardiomegaly

16

True or False: A high TT4 indicates hyperthyroidism.

TRUE

17

___% of cats with hyperthyroidism have a high TT4.

90%

18

Which is more consistently elevated in hyperthyroid cats, TT4 or fT4ED?

fT4ED

19

Which the preferred screening test for hyperthyroidism, TT4 or fT4ED?

TT4