Fig. 3From: PragmaTic, prospEctive, randomized, controlled, double-blind, mulTi-centre, multinational study on the safety and efficacy of a 6% HydroxYethyl Starch (HES) solution versus an electrolyte solution in trauma patients: study protocol for the TETHYS studyStroke volume variation optimization protocol to guide perioperative volume losses. VV, stroke volume variation; MAP, mean arterial pressure; IP, investigational product (Volulyte or Ionolyte)Back to article page