“…In the analyses, they were divided into hyper- and isovolaemic. In 12 of the trials, the administration of a plasma volume expander was not combined with venesection and was, therefore, defined as hypervolaemic (ALIAS-Part 1 2011; ALIAS-Part 2 2013; Bornstein 1981; Frei 1987; Gilroy 1969; Haass 1989; Hartmann 1987; Kaste 1976; MAHST 1998; Matthews 1976; Rudolf 2002; Spudis 1973). In one study, venesection was performed only if there were signs of volume overload; this trial was also considered as hypervolaemic (HSSG 1989).…”