A female client has married recently.

(A) Although it is important that the client drink adequate fluids while treating a bladder infection with trimethoprimsulfamethoxazole, the failure to do so will not cause pyelonephritis. (B) A stricture or abnormality may cause the progression of bladder infection to urinary tract infection, but this is rare. There is no indication in this situation that this has occurred. (C) The most common cause of pyelonephritis is improper treatment of bladder infections. The client typically feels better after several days, discontinues the medication, and saves the remainder forthe next occurrence of a bladder infection. For this reason, it is imperative to provide client education related to completion of the prescribed medication. (D) There is no evidence that infection in another body system could cause pyelonephritis.