F2 and Renal insufficiency: PaO2/FiO2 increased by HES 200/0.5 but not albumin (p < 0.05); higher cardiac index, DO2I and VO2I in HES 200/0.5 group (p < 0.05 for all comparisons); no differences in incidence of renal failure, platelet count, PT or aPTT