This is a prospective, cohort study. This study will include approximate 600 End Stage Renal Disease (ESRD) patients receiving Haemodialysis (HD) treatment twice a week or thrice a week.~The assessments at enrolment and in follow-up are summarized as follow:~Enrolment - Patients will be in Long Interdialytic interval (LIDI) at enrolment (V1). Demographic characteristics, medical history, etiology of ESRD, concomitant medications, dialysis vintage, an electrocardiogram (ECG), a pre-dialysis serum potassium measurement and a post- dialysis serum potassium measurement, blood routine, blood gas analysis and other blood biochemistry measurements, etc., will be obtained.~Follow-up - Potassium measurements, including pre-dialysis potassium measurements at LIDI once every month (V3-V8), pre-dialysis potassium at SIDI during the first week (V2) for patients in HD thrice a week specifically, will be obtained. Concomitant medications, blood routine, blood gas analysis and other blood biochemistry measurements, etc., will be obtained
The objective of this study is to evaluate the prevalence and recurrence of Hyperkalaemia (HK) in Chinese HD patients and to understand the treatment pattern of HK in China.