urinary tract infections

Question
10 yr old shitzu male , hx - severe deformities in f and b legs and hips , 2wks ago notice he needed worming again , used pyrantel pamoate, 2 mil , (1mil per 5 lbs) seemed to be fine,eating fine drinking fine, last night noticed large amount of blood in urine , this am noticed the same , local vet will say to put him down , is there anything i can give him for the infection , he has also had eating disorders in the past requiring iv intervention and people food for months, I know he is sick but I dont want to lose him , I have some canine antibiotics on hand any suggestions .  

Answer
A urine sample should be checked for underlying infection and crystals as well as a complete blood count to look for anemia (blood loss), platelet problems (low numbers cause bleeding) or elevated white blood counts (sign of infection).   Certainly a course of antibiotics is indicated first off, and if the blood counts are normal and this happens again, then x-rays should be done to check for bladder stones.   With him being 10 years old, there is always a possibility of bladder cancer, but I wouldn't jump to that conclusion first off without doing any testing.