Abstract: 【Abstract】Objective To investigate serum magnesium level in maintenance hemodialysis (MHD) patients
in a single HD center and to compare the serum magnesium (Mg) level with patients’nutritional status.
Methods MHD patients with stable clinical conditions in our hemodialysis center were enrolled in this
study. Demographic data, primary cause of the end stage renal disease, dialysis vintage, residual renal function
were recorded. Body mass index, subjective global assessment (SGA) score, pre- dialytic serum album
and Mg were obtained. Demographic data and nutritional markers were compared with the patients with different
serum Mg levels. Results A total of 116 patents (69 males and 47 females; males: females=1.5:1) with
the average age of 57.8±14.8 years were recruited for this study. The average serum Mg concentration was
1.18±0.14 mmol/L. Ninety- four patients (81.0%) had hypermagnesemia, 22 patients were in normal range,
and no patients had hypomagnesemia. Hypermagnesemia patients were younger with higher albumin level, as
compared with the patients having normal serum Mg. There were no statistical differences in gender, SGA
score, BMI, dialysis vintage, primary cause and residual renal function between patients with normal serum
Mg and those with hypermagnesemia. Conclusions Hypermagnesemia is prevalent in MHD patients. Patients
with hypermagnesemia are younger with better nutritional status.

Key words: chronic kidney disease, maintenance hemodialysis, hypermagnesemia, nutritional status