The drugs you evaluated in your disc susceptibility tests have different potencies (see table C1; disc content). Which ONE of the following options, based on the laboratory data alone, is the most approapriate in the treatment of a patient with a UTI ? Select one: A. All the above drugs (A, B, C and D) could be considered B. Trimethoprim (zone size 30 mm)   C. Ampicillin (zone size 25 mm) D. Amoxicillin (zone size 15 mm) E. Cephalexin (zone size 25 mm)

Urinary tract infection is a type of infection which mainly affects ureters, kidney, bladder and urethra. Mostly urethra and bladder is affected. Mainly seen in womans then man usually between 20 to 50 years of age. In woman, cyctitics or pyelonephritis mainly involved while in man urethritis and prostatitis. Most bacteria involved are Escherichia coli ( 75 to 95% ), Klebsiella, Proteus mirabillis and Pseudomona aeruginosa. Gram positive include Staphyloccus saprophyticus, Enterococcus fecalis, Streptococcus agalatiae.