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Hello Libby, I'm Dr. Deb.Thanks for requesting me; I'll do my best to help you today.I'm sorry for this concern for Katy. I do have a few questions to ask about her first if you don't mind:1. Has an x-ray been done of her bladder?2. Has an ultrasound been suggested?3. Has her urine been cultured?
There may be a slight delay after I receive your answers since I have to type up a response to you. Thanks for your patience. Deb
Libby: Thanks for the answers to my questions.When chronic uti's are diagnosed or suspected (based on symptoms) in a dog this age and then starts to behave as you describe, then I'd want to rule out bladder stones if a culture and sensitivity is negative. If this were my case, I'd suggest an x-ray at the least although an ultrasound will be the better diagnostic tool to competely evaluate the bladder.An x-ray might indicate whether or not bladder stones are present but an ultrasound can do that and more....it can evaluate the bladder wall for thickening or evidence of abnormalities. If there's not evidence of stones and a culture is negative and yet I still have a dog with evidence of a uti, then I frequently place them on antibiotic therapy for at least 6-8 weeks at a time. I'll also suggest cranberry supplements to help acidify the urine which can help in some cases...Uromaxx or Cranidinid are good choices.There's also evidence that chronic uti's in some dogs are secondary to something called "bacterial biofilm" . This is a protective matrix around bacteria which prevents sufficient penetration by antibiotics and needs to be addressed as well. Clarithromycin is very effective in reducing bacterial biofilm and may be something to discuss with your vet. I hope this helps and gives you several options to consider Deb