Neurological Effects of Goal-directed Fluid Therapy in Beach Chair Position Shoulder Surgery

"Patients in the group will follow our mini-fluid challenge test goal-directed therapy protocol, maintaining:~* individualized optimised stroke volume by mini-fluid challenge first~* keep mean arterial pressure ≧65 mmHg~* keep systolic blood pressure ≦140 mmHg~* keep cardiac index ≧ 2.5 L/min/cm2"

"Patients in the group will receive standard perioperative care at the discretion of care-giving anesthesiologist, maintaining:~* keep mean arterial pressure ≧65 mmHg~* keep systolic blood pressure ≦140 mmHg"