对于后尿道发炎水肿、前列腺肥大或后尿道外伤性断裂的病人,采用一般导尿法是有困难的,多数不能成功。为此,我们在导尿管内插入一铅丝作引导,待插入膀胱后再将铅丝抽出,结果导尿顺利。但必须注意,选择的铅丝不宜太细,因太细的铅丝不易将 For urethral inflammation and edema, prostatic hypertrophy or urethral traumatic rupture of patients, the use of general catheterization method is difficult, the majority can not be successful. To this end, we insert a lead wire in the catheter for guidance, to be inserted into the bladder after the lead wire out, the results of a smooth catheterization. But we must note that the choice of lead wire should not be too thin, because too thin lead wire will not be easy