Objective:To compare therapeutic effects of hemodiafiltration (HDF) ,hemoperfusion combined hemodi‐alysis (HP+ HD) and high flux hemodialysis (HFHD) on uremic refractory hypertension (URH) .Methods :A total of 60 URH patients undergoing maintenance hemodialysis (MHD) were selected from three hospitals .They were randomly and equally divided into HDF group ,HP+ HD group and HFHD group .The 24h ambulatory blood pres‐sure ,concentrations of parathyroid hormone (PTH) andβ2‐microglobulin (β2‐MG) were detected and compared a‐mong three groups before ,after first treatment and 12 weeks after treatment .Results:Compared with before treat‐ment ,after the first treatment ,there were significant reductions in blood pressure ,blood concentrations of PTH andβ2‐MG in three groups , P< 0.05 or <0.01 ,and therapeutic effect was most significant in HP + HD group ;compared with after first treatment ,12 weeks later ,blood concentrations of PTH and β2‐MG further significantly reduced in three groups (P<0.05 or <0.01) ,compared with HDF group and HFHD group ,there was significant reductions in blood concentrations of PTH [(211.12 ± 50.05) pg/L ,(195.49 ± 48.32) pg/L vs .(75.43 ± 14.38) pg/L] andβ2‐MG [ (9.16 ± 5.02) mg/L ,(9.92 ± 5.37) mg/L vs .(5.39 ± 2.09) mg/L] in HP+ HD group , P<0.01 all .In HDF、HP+ HD、 HFHD groups ,the DBP were [ (86.70 ± 12.76) mmHg)、 (86.10 ± 9.84) mmHg)、(90.95 ± 10.15) mmHg] respectively ,those were return to normal mainly ,and no significant difference ,the SBP were [ (140.75 ± 10.85) mmHg)、(146.20 ± 8.31) mmHg)、(146.30 ± 9.65) mmHg) ,those were close to normal and no significant difference also .Adverse reactions were mild in three groups ,that of HDF group was significantly less than those of HP+ HD group and HFHD group [0 vs .40% ,45% , P<0.05 all] .Conclusion:HDF ,HP+ HD and HFHD could effectively remove blood PTH and β2‐MG ,and lower blood pressure in URH patients .Hospital may choose therapeutic plan according to specific needs of patients and HD room condition .

Objective To investigate and analysis the actuality and demands of scientific researchers in state clinical research facility of TCM, in order to provide evidences for policy making. Methods All the trainees taken part in the meeting for the training of clinical research method were assigned to answer the self-designed questionnaire. Results Of all these people, 47.58 percent people had senior professional title, 84.14 percent people had doctorate or master degree, 57.24 percent people had participated in project research at provincial or ministerial level as key personnel, 35.17 percent people had participated in a key disease research as directors, 65.52 percent people had taken methodology training of clinical research,30.34% of who trained by evidence-based medicine. The majority of these people had clear understanding in methodology of clinical research, who believed that evidence-based medicine and system evaluation are the most difficult subjects to understand and practice, hoping to learn more about the knowledge on statistics. Conclusion Clinical researchers of state clinical research facility of TCM had sound basis for scientific research, but relatively lacking of key disease research and systematic knowledge of scientific methodology, which needed to be enhanced.