Abstract Study Objective To determine the incidence of postoperative ascending infection without antibiotics with the use of a pediatric Foley catheter (PFC) after operative hysteroscopy for intrauterine pathology. Design Retrospective case series (Canadian Task Force classification III). Setting University-affiliated outpatient medical center. Patients Patients who underwent operative hysteroscopy for uterine septum, arcuate uterine anomaly, or multiple submucosal myomas between 1992 and 2015.