The use of Ribavirin to treat chronic hepatitis C in patients receiving azathioprine has been reported to induce severe pancytopenia and may increase the risk of azathioprine-related myelotoxicity. Inosine monophosphate dehydrogenase (IMDH) is required for one of the metabolic pathways of azathioprine.
There are several common underlying causes of kidney disease. 1  In older cats Interstitial Nephritis is most frequently seen. 2  Polycystic Kidney Disease (PKD) is a very common problem in Persian cats - 20-30% of them can be affected. 3  Tumours are occasionally seen in middle-aged and older cats.
Types of Kidney Failure. There are two types of kidney failure in cats: chronic (ongoing) and acute (urgent). With chronic kidney failure, a catâs kidneys fail progressively over time. An acute failure, on the other hand, presents an emergency that must be treated immediately. This doesnât mean that chronic kidney failure isnât serious.