Small volume resuscitation with 3% hypertonic saline solution decrease inflammatory response and attenuates end organ...

Area of Science:

• Resuscitation Medicine
• Trauma Care
• Critical Care

Background:

• Limited research exists on 3% hypertonic saline (HS) for hemorrhagic shock (HS) resuscitation.
• Investigating HS's immunomodulatory effects compared to standard fluid resuscitation is crucial.

Purpose of the Study:

• To evaluate the immunomodulatory benefits of 3% HS resuscitation versus lactated Ringer's (LR) in a rat model of hemorrhagic shock.
• To compare the efficacy of different concentrations of HS in mitigating shock-induced inflammation and organ damage.

Main Methods:

• Wistar rats experienced induced hemorrhagic shock (MAP 35 mm Hg) and received resuscitation with LR, 3% HS, or 7.5% HS.
• Cytokine levels (TNF-α, IL-6) and histopathological injury scores for lungs and intestines were assessed 4 hours post-resuscitation.

Main Results:

• HS groups exhibited higher mean arterial pressure and osmolarity compared to the LR group.
• Lung and intestinal injury scores were significantly lower in both 3% and 7.5% HS groups versus the LR group.
• Inflammatory markers (TNF-α, IL-6) were lower in HS groups than in the LR group, with levels similar to controls.

Conclusions:

• Small-volume hypertonic saline resuscitation effectively modulates inflammatory responses and reduces end-organ damage post-hemorrhagic shock.
• 3% HS demonstrates comparable immunomodulatory and metabolic benefits to conventional HS concentrations, supporting its use in trauma resuscitation.