Abstract: Objective  We aimed to compare the resting energy expenditure (REE) between peritoneal dialysis (PD) patients and hemodialysis (HD) patients.  Methods   This cross-sectional study enrolled 105 PD patients and 35 HD patients who were clinically stable from two tertiary hospitals in Beijing. Their REE was measured by indirect calorimetry.  Results   The mean age of the patients was 52.5±11.9 years old, and the body weight was 68.6±15.1kg, 57.7% being man and 43.6% having diabetes. The REE was 1432.6±339.4 kcal in HD patients and was 1334.6±271.8 kcal in PD patients, without significant difference between PD and HD patients (P=0.086). REE was positively correlated with height (r=0.399/0.574, P=0.018/＜0.001), weight (r=0.756/0.730, P＜0.001), male (r=0.481/0.582, P=0.003/＜0.001), grip strength (r=0.584/0.551, P＜0.001) and lean body mass (r=0.674/0.677, P＜0.001), negatively correlated with age (r=-0.432/-0.254, P=0.010/0.009), dialysis age (r=-0.356/-0.289, P=0.036/0.003) and urea clearance (Kt/V) (r=-0.786/-0.326, P＜0.001/0.002) in both HD and PD patients.  Conclusions  There was no significant difference in REE level between HD and PD patients.

Key words: Peritoneal dialysis, Hemodialysis, Resting energy expenditure