The investigators will do the Goal directed fluid therapy by protocolized fluid management in the experimental group, using PPV to guide the fluid administration, compare with standard fluid management in patients undergoing complex spine surgery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
60
pulse pressure variation will be used to as a goal to guide fluid administration in this group
standard fluid treatment by an anesthesiologist
Faculty of Medicine Siriraj Hospital
Bangkok Noi, Bangkok, Thailand
episode of intraoperative hypotension
Blood pressure will be record continuously using arterial catheter in both group. Number of participants and episode of hypotension (defined as SBP \< 90 mmHg or MAP \< 60 mmHg or decrease of SPB \>= 25% from baseline for 5 minutes or need vasopressor) therapy
Time frame: intraoperative
unit of blood transfusion
all unit of blood transfusion will be record intraoperative and postoperative
Time frame: intraoperative and up to 24 hours postoperatively
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