Tetracycline for oral treatment of canine urinary tract infection caused by Pseudomonas aeruginosa.

Oral treatment with tetracycline resulted in bacteriologic cure in 23 of 25 (92%) dogs with urinary tract infection caused by Pseudomonas aeruginosa. All 25 of the isolates of Pseudomonas spp were susceptible to in vitro concentrations of tetracycline (less than or equal to 64 microgram/ml), well below the mean urine concentrations attained in the urine of clinically normal dogs given standard oral doses of tetracycline.