患者,男性,78岁。因急起意识障碍伴发作性四肢抽搐6小时收入院。患者于二月前发现前列腺肿块,怀疑前列腺癌,准备复查前列腺B超而大量饮水,憋尿,行B超前当天上午饮水约2000ml,无尿意,下午又不断饮水2500ml,早、中餐均未进食,至下午4时患者有便意,进B超室检查前(B超检查结果为前列腺 Patient, male, 78 years old. Due to acute disturbance of consciousness accompanied by extremities convulsions 6 hours income hospital. Patients found prostate mass before February, suspected prostate cancer, ready to review the prostate B ultrasound and plenty of water, holding back urine, line B ahead of the morning about 2000ml of drinking water, no urinary intention, afternoon and continue to drink 2500ml, early, lunch did not eat, To 4 o’clock in patients have the intention, into the B-room examination before (B-test results for the prostate