Objective To investigate the effects of high flow hemodialysis (HFHD) on cardiac function in uremia patients. Methods A prospective randomized controlled study was conducted. Sixty patients who were diagnosed with uremia, taken maintenance hemodialysis (MHD) and 30 healthy controls admitted to the Second People's Hospital of Guiyang from December 2014 to June 2015 were enrolled. They were randomly divided into two groups:HFHD group (HFHD three times a week) and the routine hemodialysis group (HD group, HD three times a week), with 30 in each group. Patients in each group were received hemoperfusion and hemofiltration once a month. Before the treatment and 6 months after the treatment, venous blood from all the patients were collected for testing the brain natriuretic peptide (BNP), cardiac troponin T (cTnT) and the ultrasound cardiograph were done at the same period by a special person, the left ventricular end diastolic diameter (LVEDD), left ventricular end systolic diameter (LVESD), the left ventricular end diastolic volume (LVEDV), left ventricular end systolic volume (LVESV), left ventricular posterior wall thickness (LVPWT), interventricular septum thickness (IVST), early and late diastolic blood flow to the largest ratio (E/A), left ventricular ejection fraction (LVEF), left ventricular mass index (LVMI) were recorded. Results Compared with the health control group, BNP, cTnT, LVEDD, LVESD, LVESV, LVPWT, IVST were significantly increased, LVEDV were significantly lowered before treatment in the HD group and HFHD group. But no significant differences in the above indexes and E/A, LVEF, LVMI between two groups were found. Compared with the data before treatment, the BNP, LVPWT were significantly lowered after treatment in HD group [BNP (ng/L): 641.50±60.09 vs. 2676.20±454.30, LVPWT (mm): 10.57±1.16 vs. 12.57±1.41, both P < 0.05]. The BNP, LVPWT were significantly lowered in HFHD group as compared with HD group [BNP (ng/L): 253.10±48.77 vs. 641.50±60.09, LVPWT (mm): 9.29±1.08 vs. 10.57±1.16, both P < 0.05]; in addition, the cTnT, IVST, LVMI were significantly lowered after the treatment in HFHD group compared with those before treatment [cTnT (μg/L): 0.014±0.005 vs. 0.028±0.011, IVST (mm): 7.81±1.69 vs. 11.04±2.23, LVMI (g/m2): 149.10±15.77 vs. 158.70±17.25, all P < 0.05], and the LVEF were significantly increased in HFHD group as compared with those before treatment (0.574±0.068 vs. 0.528±0.082, P < 0.05). Conclusion HFHD has obvious advantages than the routine HD in improving cardiac function of uremia patients.

Objective To discuss the effects of multimodal combination dialysis on Klotho protein, fibroblast growth factor-23 (FGF-23) and brain natriuretic peptide (BNP) in patients with maintenance hemodialysis (MHD). Methods A randomized controlled trial (RCT) was conducted. 120 patients who was diagnosed with chronic renal failure (CRF) uremia receiving MHD over 3 months admitted to Blood Purification Centre of Department of Nephrology of the Second People's Hospital of Guiyang from December 2015 to December 2016 were enrolled, who were randomly divided into hemodialysis (HD) group (HD for 8 times a month), HD + hemofiltration (HF) group (HD for 8 times a month + HF once a month), and HD + HF + hemoperfusion (HP) group (HD for 8 times a month + HF for 4 times a month + HP once a month), with 40 patients in each group. Before and after treatment for 6 months and 12 months, blood was taken from venous circuit tube, the serum Klotho protein and FGF-23 levels were determined by enzyme linked immunosorbent assay (ELISA), and the serum BNP level was determined by electrochemiluminescence. Results 120 patients with MHD were enrolled in the final analysis without withdrawal. There were no significant differences in the levels of Klotho protein, FGF-23, or BNP before enrollment among the three groups (all P > 0.05). Compared with those before enrollment, the levels of serum Klotho protein after enrollment in three groups showed a sustained upward tendency, which were higher in HD + HF + HP group than in HD + HF group and HD group (μg/L: 2.59±0.61, 1.63±0.35, 1.13±0.26 at 6 months, F = 119.374, P = 0.000; 6.98±1.21, 3.57±1.03, 2.12±0.43 at 12 months, F = 275.675, P = 0.000); the levels of FGF-23 showed a sustained downward tendency, which were lower in HD + HF + HP group than in HD + HF group and HD group (ng/L: 69.22±38.26, 132.28±61.18, 178.50±74.64 at 6 months, F = 33.509, P = 0.000; 32.81±17.32, 87.93±43.27, 146.33±69.28 at 12 months, F = 55.466, P = 0.000);the BNP showed a similar tendency as FGF-23 (ng/L: 4083.39±2864.53, 7245.69±4643.81, 7969.12±5360.85 at 6 months, F = 8.758, P = 0.000; 1521.86±894.63, 4554.32±1969.84, 5013.89±2033.64 at 12 months, F = 49.003, P = 0.000). Conclusion Multimodal combination dialysis can increase the Klotho protein level, and decrease the levels of FGF-23 and BNP in MHD patients with CRF uremia.