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Fixed Volume or Fixed Pressure: A Murine Model of Hemorrhagic Shock

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Published on: June 6, 2011

Fluid resuscitation: colloids vs crystalloids.

¹Department of Intensive Care, Erasme Hospital, Free University of Brussels, Belgium. jlvincen@ulb.ac.be

Acta Clinica Belgica

|February 21, 2008

Summary

Fluid choice for critically-ill patients is debated. Current evidence does not favor one resuscitation fluid over another for survival benefits. Focus on adequate fluid volume for perfusion.

Area of Science:

Critical Care Medicine
Nephrology
Pharmacology

Background:

The optimal fluid for resuscitation in critically-ill patients is a subject of ongoing debate.
All available fluid types, including crystalloids and colloids, present potential drawbacks.
No definitive studies demonstrate a survival advantage of one fluid over another in this patient population.

Purpose of the Study:

To review the current understanding of fluid resuscitation choices in critically-ill patients.
To highlight the risks and benefits associated with different crystalloid and colloid solutions.
To identify the need for further research into specific fluid regimens for critically-ill patients, particularly those with acute kidney injury.

Main Methods:

Literature review and synthesis of existing evidence on fluid resuscitation.

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Comparative analysis of commonly used crystalloid solutions (e.g., Ringer's lactate, normal saline) and colloid solutions (e.g., dextrans, gelatin, albumin, hydroxyethyl starch).

Assessment of reported adverse effects, including hyperchloremic acidosis, renal impairment, anaphylaxis, and cost-effectiveness.

Main Results:

Balanced crystalloids may be preferable to normal saline, potentially reducing the risk of hyperchloremic acidosis and associated renal dysfunction.
Colloid solutions have varied profiles: dextrans are used less due to anaphylaxis risk, gelatin has limited efficacy, albumin is effective but costly, and hydroxyethyl starch may harm renal function.
Evidence remains insufficient to recommend specific fluid types for improved survival in critically-ill patients.

Conclusions:

The choice of resuscitation fluid in critically-ill patients lacks clear evidence supporting one type over another for survival.
Physicians should prioritize adequate fluid administration to maintain perfusion over the specific type of fluid used, pending further research.
Further studies are essential to clarify the benefits and harms of specific fluid regimens, especially in patients with or at risk of acute kidney injury.