Burn resuscitation: crystalloid versus colloid versus hypertonic saline hyperoncotic colloid in sheep

Area of Science:

• Burn resuscitation research
• Fluid balance and hemodynamics
• Trauma care innovations

Background:

• Large body surface area burns cause significant fluid shifts and hemodynamic instability.
• Effective resuscitation is critical to manage fluid balance and prevent organ hypoperfusion.
• Optimizing resuscitation fluids aims to minimize edema and maintain physiological parameters.

Purpose of the Study:

• To evaluate fluid balance and hemodynamic responses in large burn injuries during the initial 8 hours of resuscitation.
• To compare the efficacy of lactated Ringer's solution, 6% hetastarch, and hypertonic saline dextran in burn resuscitation.
• To assess the impact of different resuscitation fluids on edema formation and electrolyte balance.

Main Methods:

• A prospective, controlled study involving anesthetized female sheep with induced scald injuries.
• Administration of lactated Ringer's solution, hetastarch, or hypertonic saline dextran to achieve baseline oxygen delivery (DO2).
• Monitoring of cardiovascular hemodynamics, plasma sodium, colloid osmotic pressure, and fluid balance over 8 hours post-injury.

Main Results:

• All tested solutions restored baseline DO2 within 1 hour post-injury.
• Hetastarch and hypertonic saline dextran reduced net fluid volume by 48% and 74% respectively, compared to lactated Ringer's.
• Hypertonic saline dextran decreased non-burned skin edema and prevented hyponatremia, unlike the other solutions.

Conclusions:

• Initial resuscitation with colloid (hetastarch) or hypertonic saline colloid significantly reduces fluid resuscitation volume in large burn injuries.
• Hypertonic saline dextran offers advantages in reducing edema and preventing hyponatremia compared to isotonic crystalloids and hetastarch.
• Fluid resuscitation strategies significantly impact fluid balance, edema, and electrolyte status in severe burn patients.