Dietary management of urolithiasis (dogs and cats)

Question 1

Once you suspect uroliths, what must you do?

Answer 1

Must determine the type!

Question 2

What are the common uroliths in dogs (5)

Answer 2

SOCUS 
Struvite 
Oxalate 
Cysteine 
Urate 
Silicate

Question 3

What are the common uroliths in cats

Answer 3

Struvite

Oxalate

Question 4

When is the nutritional objective to reduce the formation of stones

Answer 4

In the case of everything bar struvite!!
Silicate 
Urate 
Cysteine 
Oxalate

Question 5

How do you nutritionally reduce the formation of stones (4)

Answer 5

1. Decr protein (11%)- only give easily digestible and HBV, therefore the amount of S containing and purine will decrease
2. Control protein def
3. Decr calcium
4. Alkalisation

Question 6

What is the nutritional objective in the case of struvite stones? (And what is struvite composed of?)

Answer 6

Struvite is Mg ammonium sulphate

First dissolve the stones, then prevent recurrences

Question 7

How do you nutritionally treat the struvite stones (5)

Answer 7

1. Dissolve the struvite: incr ME, decr P, get pH to 6 with NH4Cl and Methionine (the acid destroys the struvite)
2. RSS= relative supersaturation value decr P (K)
3. Decr Mg
4. Incr Na

Question 8

What is urolithiasis

Answer 8

Stones in the lower urinary tract
More common in cats
Can be caused by bact– cystitis

Question 9

Other treatment of uroliths

Answer 9

DL- methionine tablet
Add salt to diet if appropriate
Cystits: sulphonamide for more than 5 days and antibiotics

Question 10

Prescription diet

Answer 10

Only for 6 months