Acute simple cystitis
Acute UTI confined to the bladder:
Acute complicated UTI
Acute UTI accompanied by signs or symptoms of extension of infection beyond bladder (acute pyelonephritis, febrile UTI, or catheter-associated UTI):
Patients may or may NOT have cystitis symptoms.
Bacteremic UTI and “urosepsis” are managed the same as acute complicated UT
Special populations with unique features
Acute Simple Cystitis
Acute Complicated UTI
Oral regimen preferred from outset in most patients. If started on parenteral agent, switch to oral agent as soon as feasible.