Most patients will be evaluated at least twice for ability to spontaneously micturate and have their PVR volumes accessed via ultrasonography before being assigned to either a bed pan every 2 hours or a Foley catheter placement. If the patient is able to spontaneously micturate twice and their PVR is <100mL, they will be assigned to a bed pan every 2 hours. If a patient is unable to micturate with a PVR >100mL, they will receive a Foley catheter.