title: Volume therapy with a new hydroxyethyl starch solution in cardiac surgical patients before cardiopulmonary bypass.
abstract: OBJECTIVE
  To compare the hemodynamic efficacy of a new hydroxyethyl starch (HES) preparation (130/0.4) with an HES 200/0.5 solution.
  
  
  METHODS
  Prospective, randomized, double-blind, phase II study.
  
  
  METHODS
  An urban, university-affiliated hospital.
  
  
  METHODS
  Twenty patients undergoing elective first-time cardiac surgery.
  
  
  METHODS
  After induction of anesthesia and before the start of surgery, a new HES 130/0.4 (molecular weight, 130,000 d; degree of substitution, 0.4) (n = 10) or HES 200/0.5 (molecular weight, 200,000 d; degree of substitution, 0.5) (n = 10) was infused (10 mL/kg) within 30 minutes when pulmonary capillary wedge pressure was less than 10 mmHg.
  
  
  RESULTS
  Extensive hemodynamic monitoring was performed 30 and 60 minutes after the end of infusion. Then surgery was started. Standard laboratory parameters were measured before surgery and on the 1st postoperative day. A similar amount of HES was given in both groups (HES 130, 795+/-75 mL; HES 200, 820+/-90 mL). Filling pressures (central venous pressure, pulmonary capillary wedge pressure) and cardiac index increased similarly in both groups and remained significantly elevated 60 minutes after the end of infusion. All other hemodynamic parameters were similar between the two volume groups. Renal (creatinine) and hepatic function (aspartate aminotransferase, alanine aminotransferase) and hemostasis (platelet count, activated partial thromboplastin time, blood loss) were without group differences until the morning of the 1st postoperative day.
  
  
  CONCLUSIONS
  The new 6% HES 130/0.4 was as effective as a 6% HES 200/0.5 preparation in regard to hemodynamic efficacy. No negative side effects on organ function were seen. The 6% HES 130/0.4 solution may become an alternative strategy for volume therapy in cardiac surgery.
authors.affiliation: Department of Anesthesiology and Intensive Care Medicine, and Clinic of Cardiac Surgery, Klinikum der Stadt Ludwigshafen, Ludwigshafen, Germany.
authors.forename: Joachim
authors.initials: J
authors.lastname: Boldt
authors.forename: Andreas
authors.initials: A
authors.lastname: Lehmann
authors.forename: Reni
authors.initials: R
authors.lastname: Römpert
authors.forename: Gerd
authors.initials: G
authors.lastname: Haisch
authors.forename: Frank
authors.initials: F
authors.lastname: Isgro
mesh_terms: D000328:Adult; D000368:Aged; D006348:Cardiac Surgical Procedures; D002315:Cardiopulmonary Bypass; D004311:Double-Blind Method; D006439:Hemodynamics; D006801:Humans; D006895:Hydroxyethyl Starch Derivatives / Q000494:pharmacology*; D008875:Middle Aged; D008970:Molecular Weight; D010952:Plasma Substitutes / Q000494:pharmacology*; D011446:Prospective Studies
chemical_list: D006895:Hydroxyethyl Starch Derivatives; D010952:Plasma Substitutes