Saturday Dec 7, 2013 Clinical research on urinary stones in dogs by Dr Sing Kong Yuen, Toa Payoh Vets – no surgery from 2010 to 2013
Since 2010, this gentle 8-year old male neutered Miniature Schnauzer would pass blood in the urine and had difficulty urinating in 2010. The first vet consulted diagnosed bladder stones (one irregular shaped stone) and great difficulty in passing the catheter during the first visit. The surgery quoted was $2000-$3,000. The owner consulted Toa Payoh Vets in 2011, 2012 and now 2013 each time his dog peed blood. But he would not want surgery, blood test or urine test just antibiotics. “The Miniature Schnauzer is prone to getting urinary stones,” he replied when I got his permission to take X-rays which revealed stones in the bladder and in the penile area. He had fed 12 cans of S/D diet in early 2012 and then home-cooked food.
The dog could pee in 2013but dripped bloody urine. With antibiotics in the past 2 days after admission, his urine was less bloody. The owner had fed “home-cooked food” but the haamaturia persisted. “The dog’s back legs were trembling,” he told me. “He could be feeling the pain” I took a urine test and there was urinary tract infection. But no “crystals” inside the bladder. X-rays showed numerous stones. pH was 7.0. So what type of stones are these? It is hard to say.
It looks like a calcium oxalate stone in the bladder based on its sharp irregular edges but the definitive diagnosis is stone analysis in the lab. This video shows he findings of the X-rays and urine tests done in Dec 2013. The X-rays were similar to those taken by Vet 1 in 2010 when the dog had great difficulty in urination. No dysuria this time in 2013.
The owner has not decided on what to do next. The bacteria had damaged the urinary tract and with time, will lead to kidney failure. So far, no stones inside the kidney and the dog is not vomiting. This case appeared to show that dogs with urinary stones do not “need” surgical removal, only antibiotics whenever there is blood in the urine?