Re: Feline urate bladder stones

kevin lenahan — Thu, 11 Dec 2014 14:25:48 GMT

Hi Andy,

Thank you for the advice.

The bile acid stim test was normal(pre and post < 10) and we ensured the cat ate lots after the fasting BA.

Also, the cat is quite overweight,(has gained 1.5kg since she started k/d diet) so have emphasized the importance of weight loss to the owners.

Also no other symptoms of a PSS.

On repeated questioning of the owners, they finally admitted that they have been giving treats as well as k/d in spite of being told not to, they know better now.It's an indoor cat so getting "take-aways" from other homes will not be an issue.

I'll try the wet renal diet and weight loss rout and hope for the best.Tableting the cat is not easy so might have to avoid allopurinol for now.

Many thanks

Kevin

Re: Feline urate bladder stones

Andrew Kent — Tue, 09 Dec 2014 14:20:10 GMT

Hi Kevin,

I find urate stones quite difficult in cats. Was the Bile acid sim completely normal? (i.e. are you 100% sure this isn't a shunt?)

If so then the first line is usually purine restricted diets - so renal diets or Soy based diets (RCW hypoallergenic or Purina HA). Does the cat receive any food other than the renal diet? Does it go outside? If so then dietary management will have limited benefit.

It is important to monitor the urine as well, if the urine is very concentrated or very alkaline that tends to favour urate stone formation. If the urine is very concentrated then increasing water intake and aiming to reduce the USG may help.

Otherwise there are anecdotal reports of people using allopurinol in cats but we don't have any studies into safety/dosing in cats which would have to be considered.

Andy