Methods
chronic kidney failure
BLOOD, CHRONIC KIDNEY FAILURE
This study was approved by the Research Ethics Committee of the Chinese People’s Liberation Army (PLA) General Hospital (Ethics No. S2022–536-01). All patients who participated in this study signed an informed consent statement.The study period was from January 2022 to September 2022. Patients with chronic kidney failure who underwent haemodialysis at the First and Second Blood Purification Centre of the First Medical Centre of Chinese PLA General Hospital received dialysis treatment for at least 6 months. In these services, bicarbonate was used in the dialytic solution, and the duration of the haemodialysis sessions was 4 h. All patients regularly underwent three weekly dialysis treatments: Monday, Wednesday, and Friday or Tuesday, Thursday, and Saturday. Patients were enrolled randomly, that is, on random weekdays. (All patients were regularly undergoing three dialysis treatment per week, such as on Monday, Wednesday and Friday or on Tuesday, Thursday and Saturday. We randomly selected some weekday mornings to complete questionnaire by face-to-face interview.)