Feline Diabetes Mellitus Flashcards
What sex, breed and age of cats are more at risk for developing diabetes mellitus?
- Males > females
- Burmese cats
- Biphasic age peaks: 5-7 yrs old, or 12-14 yrs old
What concurrent medications are a risk factor for causing diabetes mellitus in dogs and cats?
Corticosteroids!!!
- cortisol competes w insulin, worsening hyperglycemia
- Also megestrol aceteate
How does Type II DM lead to peripheral insulin resistance?
- Amyloid is secreted when insulin is secreted
- Constant insulin release leads to accumulation of amyloid in beta cells of the endocrine pancreas
- Leads to ↓ blood supply, ↓ insulin response to ↑ glucose, and ↓ insulin secretion
How is obesity a risk factor for developing Type II DM in cats?
50% ↑ wt = 50% ↓ in insulin sensitivity
- Fat cat has to produce 2x as much insulin → more prone to insulin resistance and amyloid deposition
85-95% of cats get Type _____ diabetes mellitus
2
(Beta cell failure → insufficient insulin secretion, reduced insulin sensitivity)
50% of cats with diabetes mellitus have concurrent _________ disease
Pancreatitis
(pancreatitis can cause DM, but DM can also cause pancreatitis… hard to tell what came first)
True or False: Cats with Type II DM are insulin dependent and do not go into remission
False - Type II DM can go into remission!! Type I is insulin dependent
What drug should be avoided in a cat in remission from Type II DM?
don’t give steroids !!! cortisol competes w insulin
A cat presents for polydipsia and urinating outside of the litter box. What are the top 5 Ddx for PU/PD in cats?
- Kidney dz
- Diabetes mellitus
- Hyperthyroidism
- Hypercalcemia
- Liver failure
A cat presents for polydipsia and urinating outside of the litter box. What are the top 5 Ddx for pollakiuria in cats?
Pollakiuria = increased frequency of urination
- iFLUTD
- UTI
- Cystolith
- Behavioral
- OA
- PU/PD
What are the clinical signs seen in cats with DM?
- PU/PD
- Weight loss
- ↑ weight loss
- Poor hair coat (dull, sticky)
- 10% of cats with DM have neuropathic DM → plantigrade stance
True or False: Neuropathic DM causing plantigrade stance is usually irreversible
False - reversible after stablizing DM
A 13yr old cat presents for polydipsia and urinating outside of the litter box. A urinalysis is ran.
Glucose: +++
USG: 1.035
What can you say from these results?
- USG is useless and unreliable, glucosuria causes false ↑ in USG
A 13 yr old cat presents for polydipsia and urinating outside of the litter box. You run a minimum database and the blood glucose is 425. How can you tell if the hyperglycemia is due to diabetes mellitus or stress associated with the vet visit?
- Run a Fructosamine
- If fructosamine is HIGH, you know the cat has been hyperglycemic for atleast 2 weeks
What are the Ddx for plantigrade stance in cats?
- Hypokalemia
- Diabetic neuropathy/DM