Are we close to the ideal intravenous fluid?

Area of Science:

• Critical care medicine
• Anesthesiology
• Emergency medicine

Background:

• Intravenous (IV) fluid therapy is crucial for managing hypovolemia in patients with systemic inflammatory response (sepsis, trauma, surgery).
• No single IV fluid meets all ideal criteria; selection involves balancing risks and benefits.
• Current evidence questions the safety of some colloid fluids, particularly starch-based ones, necessitating careful consideration.

Purpose of the Study:

• To review current knowledge on IV fluid therapy for hypovolemia.
• To identify pitfalls and best practices in fluid selection and administration.
• To address the ongoing debate regarding optimal fluid agents and dosing strategies.

Main Methods:

• Literature review of current knowledge on IV fluid therapy.
• Analysis of findings from large randomized trials on colloid and crystalloid fluids.
• Discussion of clinical scenarios and patient-specific factors influencing fluid management.

Main Results:

• Evidence suggests potential harm from certain colloid fluids (e.g., starch-based) in specific situations.
• Crystalloid fluids (saline, Ringer's lactate) are commonly used, but preferences vary.
• Optimal fluid dosing remains a significant challenge, with both under- and over-administration linked to adverse outcomes.

Conclusions:

• Careful selection of IV fluids and precise dosing are essential for improving patient outcomes.
• Further research is needed to clarify the role of different fluid types and optimal administration strategies.
• Avoiding both inadequate and excessive fluid administration is critical to minimize risks like infection and organ dysfunction.