Short-course Methenamine Hippurate for Prevention of Post-operative UTI

Inclusion Criteria: * female; * patients who are able to read and write English; * 18 years of age or older; * underwent surgery for pelvic organ prolapse, urinary incontinence, or both; * require post-operative short-term transurethral catheterization for greater than 24 hours. Exclusion Criteria: * patients undergoing surgical intervention for sacral neuromodulation, or mesh excision; * patients requiring long-term catheterization secondary to injury to the urinary tract; * patients who pass their post-operative trial void and thus, do not require additional catheterization; * patients requiring catheterization for less than 24 hours; * pregnant patients; * patients who are breast-feeding; * allergy to methenamine hippurate or fluroquinolones (either ciprofloxacin or levofloxacin); * impaired renal or hepatic function; * pre-operative urinary retention; * patients who are currently using sulfonamides; * patients who have severe dehydration; * patients using tizanidine; * patients sensitive to quinolones class; * patients using theophylline; patients with myasthenia gravis; * patients with prolongation of QT interval.