Abstract: 【Abstract】Objective To analyze the effect of hydrogen and oxygen inhalation on nutrition and microinflammation in maintenance hemodialysis (MHD) patients. Methods The stable MHD patients who underwent regular hemodialysis in the Hemodialysis Center of Beijing Taikang Yanyuan Rehabilitation Hospital were enrolled in this study. Every subject inhaled hydrogen and oxygen gases (3L/min, hydrogen: oxygen=2: 1) for 120 min during hemodialysis session for one month, and the subjects were observed and followed up for 6 months. Results A total of 37 patients were enrolled in this study, and 32 patients (25 males and 7 females) completed the trial. Their mean age was 64.4±12.2 years, and mean dialysis age was 60.1±49.5 months. In the first month after the start of treatment, serum albumin increased significantly compared to the baseline value (t=2.362, P=0.025). Serum albumin increased further in the second month (t=6.813, P＜0.001). Platelet/albumin (PAR) began to decline in the first month after treatment (t=0.252, P=0.802), and decreased further in the second month (t=2.906, P=0.007). Conclusion Inhalation of hydrogen and oxygen may improve nutrition and microinflammation status in MHD patients.

Key words: Hemodialysis, Nutrition, Microinflammation, Hydrogen and oxygen inhalation