To assess feasibility and efficacy of local topical urethral anesthesia at optical internal urethrotomy (OIU) in patients with anterior and posterior urethral strictures at outpatient clinic.
One hundred and twenty eight patients were prospectively randomized to perform OIU with intraurethral prilocaine solution (group 1 = 64 patients) or intraurethral lidocaine gel (group 2 = 64 patients). Visual analog scale was used for procedure related pain evaluation at the beginning, during, and one hour after the procedure. All patients had follow-ups for a minimum of 12 months. Treatment failure was defined as Qmax < 12ml/sec at uroflowmetry and observed urethral stricture on cystoscopy.
The overall success rate of the OIU was 75.8%. The intraoperative mean visual analogue score in group 2 (5,1 ± 1,77) was significantly higher than the group 1 (3.7 ± 1.9) (P = 0.0001). The median time to stricture recurrence was 9.2 months (range 1-13 months). Stricture recurrences were noted in 15 patients in Group 1 and 16 patients in Group 2 during the follow-up period.
Prilocaine solution as a local anesthetic is a better option than intraurethral lidocaine gel in the OIU procedure and allows successful OIU to be performed in outpatient clinic. It can be preferred as a local anesthetic for OIU, particularly in unfit patients for general/regional anesthesia. Although it provides successful pain relief, it still cannot prevent experiencing moderate or severe pain in a group of patients. More studies about more effective local anesthetics for pain relief during OIU at the outpatient clinic are required.
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Published online: September 30, 2022
Accepted: August 23, 2022
Received: April 29, 2022
Informed consent: Informed consent was obtained from all individual participants included in the study.
Financial Disclosure: There are no financial conflicts of interest to disclose.
Conflict of interest: The authors declare that they have no conflict of interests.
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