1资料与方法1.1临床资料李某,女,63岁,因“维持性血液透析7个月,反复四肢乏力半月余”于2017年1月3日就诊。患者自2016年6月开始在广州中医药大学第一附属医院血液净化区规律透析,每周3次,近1月每次超滤3000 mL左右,透后未诉不适。2016年12月中旬患者开始出现四肢乏力,休息后可自行缓解,未予重视诊疗。2017年1月2日患者进食 1 Materials and Methods 1.1 Clinical data Lee, female, 63 years old, due to “maintenance hemodialysis for 7 months, repeated weakness in the limbs more than a month ” on January 3, 2017 treatment. Since June 2016, patients began regular dialysis in the blood purification area of ​​the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine three times a week, nearly 3000 ml per ultrafiltration in January, without any complaint of discomfort. In mid-December 2016, patients began to have weakness in the extremities. After the rest, they could relieve themselves and did not pay much attention to the diagnosis and treatment. January 2, 2017 Patient eating