Objective There are many operations of urinary system in the elderly.After the operations,we must catheter a demeure for douching bladder.The pain of cystospasm distresses the patients.

• 目的前列腺摘除术、全膀胱及部分膀胱切除术后需留置导尿管,膀胱需持续冲洗以免血块堵塞尿道,由此而产生的膀胱痉挛痛会持续数天。