1病历资料患者,男,56岁,因规律血液透析2年,左上肢疼痛伴动静脉内瘘搏动消失6 h急诊入院。患者2年前明确诊断慢性肾功能衰竭、3级高血压,行左前臂动静脉(桡动脉头静脉端侧吻合)内瘘形成术,2个月后血肌酐达到887μmol/L,开始规律血液透析,每周3次。入院当日下午常规门诊血液透析,超滤量3000 ml,返回家中3 h后自觉左上肢前臂疼痛, A patient data, male, 56 years old, due to regular hemodialysis 2 years, left upper extremity pain with arterial and venous fistula pulsation disappeared 6 h emergency admission. Two years ago, the patient was diagnosed with chronic renal failure and grade 3 hypertension. Fistula formation was performed on the left forearm arterial and anastomosis (radial artery anastomosis). Serum creatinine reached 887 μmol / L after 2 months. Regular hemodialysis , 3 times a week. On the day of admission routine outpatient hemodialysis, ultrafiltration volume of 3000 ml, 3 h after returning home to conscious left forearm forearm pain,