Conclusion:Urethral catheterization is widely used in clinical treatment, and using pontocaine plasmagel instead of paraffin oil lubricant can alleviate the pain efficiently.

结论：导尿操作广泛应用于临床，采用盐酸丁卡因胶浆代替普通石蜡油润滑剂，可有效地减轻患者的痛苦。