title: Plasma substitution effects of a new hydroxyethyl starch HES 130/0.4 compared with HES 200/0.5 during and after extended acute normovolaemic haemodilution.
abstract: BACKGROUND
  The volume expansion effect of a recently introduced hydroxyethyl starch, HES 130/0.4, was compared with the commonly used HES 200/0.5 after rapid infusion of a single large dose (up to 2 litres) administered during acute normovolaemic haemodilution (ANH).
  
  
  METHODS
  This prospective, randomized, double-blind study included 40 patients scheduled for major abdominal surgery with no contraindication to ANH. Patients were randomized to undergo ANH with either HES 130/0.4 (n=20) or HES 200/0.5 (n=20). Blood was collected to reach a target haemoglobin level of about 8.0 g dl(-1) and simultaneously replaced by the same volume of colloid (HES 130: 1825 [SD 245] ml; HES 200: 1925 [183] ml). Heart rate, mean arterial pressure, cardiac filling pressure, and cardiac output were measured before induction of anaesthesia (baseline), 10 min after completion of ANH, before surgery, at the end of surgery and on the following morning (postoperative day 1; POD1). ANH blood was systematically retransfused during surgery or before POD1.
  
  
  RESULTS
  Exchange of about 40% of blood volume resulted in similar haemodynamic changes in both groups. Filling pressures increased significantly, while cardiac index remained unchanged (HES 130: from 3.3 [0.4] to 3.2 [0.7] litre min(-1) m(-2); HES 200: from 3.0 [0.6] to 3.1 [0.7] litre min(-1) m(-2)). Need for crystalloids and colloids was similar between the groups during surgery and on POD1. Total blood loss (HES 130: median 2165 ml, range 660-2970 ml; HES 200: median 2464 ml, range 640-19 380 ml) and amount of allogeneic red blood cells transfused (HES 130: median 0, range 0-4 units; HES 200: median 0, range 0-18 units) were comparable in the two groups.
  
  
  CONCLUSIONS
  This study demonstrates a good immediate and medium-term plasma volume substitution effect of HES 130 compared with HES 200. HES 130 could represent a suitable synthetic colloid for plasma volume substitution during extensive ANH.
authors.affiliation: Department of Anaesthesiology, Erasme University Hospital, 808 route de Lennik, B-1070 Brussels, Belgium.
authors.forename: B E
authors.initials: BE
authors.lastname: Ickx
authors.forename: F
authors.initials: F
authors.lastname: Bepperling
authors.forename: C
authors.initials: C
authors.lastname: Melot
authors.forename: C
authors.initials: C
authors.lastname: Schulman
authors.forename: P J
authors.initials: PJ
authors.lastname: Van der Linden
mesh_terms: D000008:Abdominal Neoplasms / Q000601:surgery; D000328:Adult; D000368:Aged; D016063:Blood Loss, Surgical / Q000517:prevention & control*; D002302:Cardiac Output / Q000187:drug effects; D004311:Double-Blind Method; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006438:Hemodilution / Q000379:methods*; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D006895:Hydroxyethyl Starch Derivatives / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*; D007430:Intraoperative Care / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010952:Plasma Substitutes / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*; D011184:Postoperative Period; D011446:Prospective Studies
chemical_list: D006895:Hydroxyethyl Starch Derivatives; D010952:Plasma Substitutes