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The present study was conducted on 46 male intact (uncastrated) cats with clinical signs of FUS (disuria, haematuria and urethral obstruction) admitted in the Surgical Clinic of the Faculty of Veterinary Medicine during the period 1998-2000. The patient charts yielded information about the following items: breed, age, body weight; recurrence of episodes of symptoms; duration of the last epidose, type of treatment, feeding pattern, brand of the food, duration of feeding with a particular brand, intervals of feeding and water regimen. Intraoperatively, urine samples were collected (via incision of the urethra before the site of obstruction and after catheterization of the urinary bladder). Immediately after collection, biochemical (pH, protein, glucose, urobilinogen, ketone bodies, blood, specific gravity), microscopical (crystals, red blood cells - RBC, white blood cells - WBC, desquamated epithelial cells), microbiological and parasitological analyses have been performed. On the basis of obtained data we concluded that the most commonly affected cats were between 3-6 years old, weighing 3-5 kg without a breed predisposition. The primary cause for the development of an obstructive form of FUS was the formation of sterile urinary calculi as a result of feeding dry foods rich in magnesium, phosphorus and proteins and an insufficient water intake. Thus, predominantly strivute uroliths and more rarely, urate and oxalate uroliths were formed. The bacterial infection of the lower urinary tract developed more frequently secondarily. The detected microflora (Escherichia coli, Proteus spp., Staphylococcus spp.) was inherent for the urinary tract. |
