What is the role of goal-directed fluid therapy in intraoperative management?

• A. A fixed 1 L per hour infusion for all patients.
• B. Only used in post-op.
• C. Tailors fluids to dynamic hemodynamic targets to optimize perfusion and minimize overload; uses responsive monitoring to guide therapy.
• D. No monitoring is required.

Answer: (C)

Goal-directed intraoperative fluid therapy adjusts fluid administration based on how the patient responds in real time, using dynamic measures of heart and circulation to guide decisions. The idea is to optimize tissue perfusion and oxygen delivery while avoiding fluid overload that can lead to edema and organ dysfunction. This approach relies on responsive monitoring—such as continuous cardiac output or stroke volume measurements, and dynamic indices like stroke volume variation or pulse pressure variation—to determine when a fluid bolus improves hemodynamics and when it does not. If a bolus fails to improve perfusion or if the patient shows signs that preload is already adequate, fluids are limited and other support—like vasopressors or inotropes—may be used to maintain blood pressure and perfusion. Fixed infusion rates, managing only after surgery, or having no monitoring do not account for individual patient physiology or real-time changes during surgery, which is why they’re not suitable.