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Tonicity describes the amount of solute in a solution. The measure of the tonicity of a solution, or the total amount of solutes dissolved in a specific amount of solution, is called its osmolarity. Three terms—hypotonic, isotonic, and hypertonic—are used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells. In a hypotonic solution, such as tap water, the extracellular fluid has a lower concentration of solutes than the fluid inside...
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Related Experiment Video

Updated: Apr 22, 2026

Description of a Swine Infant Model of Volume-Controlled Hemorrhagic Shock
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Sepsis volume reposition with hypertonic saline solution.

Gilberto Friedman1, Francisco Garcia Soriano1, Ester Correia Sarmento Rios2

  • 1Departamento de Clínica Médica, Faculdade Federal de Ciências Medicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.

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|October 14, 2014
PubMed
Summary

Hypertonic saline shows potential benefits in managing sepsis by improving hemodynamics and modulating immune responses. Further research is needed to confirm its role in treating septic shock.

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Area of Science:

  • Critical care medicine
  • Pharmacology
  • Immunology

Background:

  • Sepsis is a life-threatening condition characterized by dysregulated host response to infection.
  • Hemodynamic instability and immune dysregulation are key features of sepsis pathophysiology.
  • Current sepsis management strategies aim to address these complex pathophysiological aspects.

Purpose of the Study:

  • To review the hemodynamic and immune-modulatory effects of hypertonic saline in experimental shock and human sepsis.
  • To elucidate the mechanisms of action of hypertonic saline in the context of sepsis.
  • To highlight potential benefits of hypertonic saline in managing severe sepsis and septic shock.

Main Methods:

  • Review of existing literature on hypertonic saline in hemorrhagic and septic shock models.
  • Analysis of data on hypertonic saline's effects on tissue hypoperfusion, oxygen consumption, and endothelial function.
  • Examination of hypertonic saline's impact on pro-inflammatory cytokines and oxidant species in sepsis.

Main Results:

  • Hypertonic saline demonstrates potential to counteract tissue hypoperfusion and decrease oxygen consumption in sepsis.
  • It may mitigate endothelial dysfunction and cardiac depression associated with septic shock.
  • Hypertonic saline could influence the balance of pro-inflammatory cytokines and oxidant species.

Conclusions:

  • Hypertonic saline exhibits multifaceted effects relevant to sepsis pathophysiology.
  • Its ability to address multiple damaging components of sepsis suggests a significant therapeutic impact.
  • Well-designed prospective studies are warranted to establish the clinical efficacy of hypertonic saline in sepsis management.