Optimal composition of burn resuscitation fluids.

Area of Science:

• Veterinary Medicine
• Physiology
• Biochemistry

Background:

• Burn injuries cause significant hemodynamic, renal, and hematologic disturbances.
• Fluid resuscitation is critical for managing burn patients, but the optimal fluid choice remains debated.
• Albumin's role in burn resuscitation requires further investigation.

Purpose of the Study:

• To compare the effectiveness of lactated Ringer's and hypertonic salt solutions, with and without albumin, for fluid resuscitation in a burn model.
• To evaluate the hemodynamic, renal, and hematologic effects of different fluid resuscitation strategies.
• To determine the optimal fluid for burn resuscitation in preventing edema and maintaining physiological balance.

Main Methods:

• An ovine model with a 40% flame burn was used, with resuscitation initiated one hour post-injury.
• Four different hydrating solutions were administered in equal volumes: lactated Ringer's, hypertonic salt solution, lactated Ringer's with albumin, and hypertonic salt solution with albumin.
• Hemodynamic parameters, renal function, hematologic values, electrolyte balance, acid-base status, and serum osmolality were monitored.

Main Results:

• All animals survived, with generally stable hemodynamics.
• Lactated Ringer's with albumin (LRA) restored cardiac output to preburn levels by 24 hours post-injury.
• LRA-treated animals maintained normal serum albumin, colloid osmotic pressure, electrolyte balance, and serum osmolality, and did not develop edema in unburned tissues.

Conclusions:

• Lactated Ringer's with albumin demonstrated superior efficacy in burn resuscitation compared to other solutions.
• LRA effectively reversed burn-induced cardiac dysfunction and prevented physiological derangements.
• LRA appears to be the optimal fluid choice for burn resuscitation, minimizing edema and maintaining homeostasis.