Struvite Stone

by: Dr. Jennifer Mutchler from Animal Medical Center

Struvite stone xray Struvite stone Struvite stone

Misty was a 5yr old spayed female Dachshund presented for blood in urine for a couple days duration. Her owner reported that Misty seemed to urinate very frequently over the past year, but otherwise seemed normal. Large stones were palpated in her bladder, but physical exam was otherwise normal. Abdominal radiograph showed several large stones in the bladder. A Cystotomy was performed to surgically open the bladder and remove all stones. Radiographs after surgery showed that all stones had been successfully removed. A urine sample and a single stone were sent to the laboratory for analysis. The results showed a severe urinary tract infection that was resistant to many common antibiotics. Misty was quickly started on an appropriate antibiotic. She remained in the hospital on IV fluids overnight and went home the following day. A few weeks later, results showed the stone was a Struvite stone. Struvites are composed of magnesium, ammonium, and phosphate. They are actually the most common bladder stone seen in young, female dachshunds. Most urinary stones require diet change, but no dietary change is recommended for struvite stones because they are caused by bacterial infections. Misty’s urine will be closely monitored for struvite crystals and infection for the rest of her life.