How long would you treat an upper urinary tract infection in a patient with acute obstructive pyelonephritis due to a kidney stone status-post urinary stenting without yet removal of the stone?

After treatment of an ascending urinary tract infection for 7 days, the infection will be treated. However, if the stone is large enough it may be colonized and cause recurrent infection. I would make my best efforts to get the stone removed as soon as possible and I would likely give the patient a course of therapy to start antibiotics if there were symptoms of recurrence.

I would treat with curative treatment for 7-10 days and then, if possible, treat with chronic suppressive low-dose oral therapy (depending on susceptibility data available) until the stone can be definitively removed/the source of infection removed.

Oral suppressive therapy is a weak response as is the stone is not removed it will lead to resistance.

Good