It's the colloid, not the esophageal Doppler monitor.
Horowitz
Peter E
PE
Kumar
Avinash
A
D003102:Colloids / Q000627:therapeutic use*; D017548:Echocardiography, Transesophageal / Q000191:economics; D005440:Fluid Therapy; D006801:Humans; D006895:Hydroxyethyl Starch Derivatives / Q000627:therapeutic use; D007432:Intraoperative Period; D010952:Plasma Substitutes / Q000627:therapeutic use*; D016896:Treatment Outcome
D003102:Colloids; D006895:Hydroxyethyl Starch Derivatives; D010952:Plasma Substitutes