Effects of hypothermia (33° vs. 37 C) and haemodilution on the ROTEM parameters. EXTEM-MCF, FIBTEM-MCF and EX-FIBTEM-MCF; the latter calculated as FIBTEM-MCF subtracted from EXTEM-MCF. RAc: Ringer’s acetat, HES: hydroxyethyl starch. All differences of EXTEM-MCF and FIBTEM-MCF between haemodilution groups (Undiluted vs. RAc, Undiluted vs. HES, and RAc vs. HES) within each temperature were significant (P < 0.001), except the difference of FIBTEM-MCF between Undiluted and RAc at 33°C. Differences of EX-FIBTEM-MCF were only significant (P < 0.001) between Undiluted and haemodilution with either RAc or HES, at 33°C. Brackets show significant differences between temperatures. (+: P < 0.05, ++: P < 0.01, +++: P < 0.001). Data are presented as mean values, error bars are 95% simultaneous confidence intervals. N = 10.