title: [Effects of astragalus injection on renal function in patients after cardiac valve replacement with cardiopulmonary bypass].
abstract: OBJECTIVE
  To observe the effects of Astragalus Injection (AI) on renal function in patients after cardiac valve replacement with cardiopulmonary bypass (CPB).
  
  
  METHODS
  Forty patients scheduled to receive cardiac valve replacement with CPB were randomly assigned to 2 groups equally, the control group and the AI group. Patients in the AI group were administered with AI 40 mL before anesthesia by diluting it in 250 mL 5% glucose solution via intravenous dripping, 20 mL by adding it into the priming solution before CPB and 40 mL once a day diluted as before via intravenous dripping at the foremost 5 successive days after operation. For patients in the control group, equal volume of Ringer's Liquid was given instead of AI. Peripheral blood sample and urine were collected at various time points: before anesthesia (T0), the 1st (T1), 3rd (T3), 5th (T5) and 7th day (T7) after operation, for determining blood levels of urea nitrogen (BUN), creatinine (Cr) and beta2-microglobulin (beta2-MG), as well as urinary levels of beta2-MG, microalbumin (m-Alb) and N-acetyl-D-glucosaminidase (NAG).
  
  
  RESULTS
  As compared with those at T0, in the control group, BUN, Cr at T1 and T3, serum beta2-MG at T3, urinary beta2-MG m-Alb and NAG at T1-T7 were significantly higher, while in the AI group, urinary m-Alb, NAG at T1-5 n and urinary beta2-MG at T1-7 were higher (P < 0.05). As compared with those in the control group, serum BUN at T1-3., Cr and blood beta2-MG at T3, urinary beta2-MG, m-Alb and NAG at T1-7 were lower (P < 0.05) in the AI group.
  
  
  CONCLUSIONS
  CPB could induce renal failure, and applying AI at the perioperative stage can protect renal function to some certain extent.
authors.affiliation: Department of Anesthesiology, The Affiliated Hospital of Medical College, Qingdao University, Shandong. quzhuling@163.com
authors.forename: Zhu-Ling
authors.initials: ZL
authors.lastname: Qu
authors.forename: He
authors.initials: H
authors.lastname: Dong
authors.forename: Shi-Duan
authors.initials: SD
authors.lastname: Wang
mesh_terms: D000328:Adult; D027885:Astragalus propinquus / Q000737:chemistry*; D002315:Cardiopulmonary Bypass / Q000009:adverse effects; D004365:Drugs, Chinese Herbal / Q000627:therapeutic use; D005260:Female; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D007668:Kidney / Q000503:physiopathology*; D007677:Kidney Function Tests; D008297:Male; D008875:Middle Aged; D008517:Phytotherapy; D020011:Protective Agents / Q000627:therapeutic use; D012214:Rheumatic Heart Disease / Q000503:physiopathology / Q000601:surgery*
chemical_list: D004365:Drugs, Chinese Herbal; D020011:Protective Agents