Nitrous Oxide for Analgesia During Office Urethral Bulking

Self-administered 50% nitrous oxide / 50% oxygen mixture will be given to the intervention group, starting just before the beginning of the urethral bulking procedure.

6mL of 2% lidocaine gel will be inserted and injected into the urethral canal approximately 10 minutes prior to the procedure for each participant regardless of group assignment.

Room air will be administered via the Pro-Nox machine to participants in the control group, starting just before the beginning of the urethral bulking procedure.