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Area of Science:

  • Anesthesiology
  • Pharmacology
  • Critical Care Medicine

Background:

  • Hydroxyethyl starch (HES) is a common plasma volume expander.
  • HES products vary significantly in molecular weight, substitution degree, and solvent.
  • Potential side effects include anaphylaxis, bleeding, kidney dysfunction, and pruritus.

Purpose of the Study:

  • To evaluate the safety and efficacy of modern, rapidly degradable HES preparations.
  • To compare the side effect profiles of third-generation HES with older HES formulations.
  • To determine if lower molecular weight and molar substitution reduce adverse events.

Main Methods:

  • Review of clinical studies and scientific literature on HES preparations.
  • Analysis of HES characteristics: molecular weight (M(w)), molar substitution (MS), C(2)/C(6) ratio, and solvent composition.
  • Assessment of reported side effects: hemostasis, renal function, pruritus, and accumulation.

Main Results:

  • First-generation HES (high M(w), high MS) linked to coagulation issues, organ dysfunction, and accumulation.
  • Third-generation HES (lower M(w), lower MS) demonstrated safety regarding hemostasis and kidney function.
  • Modern HES solutions in balanced, plasma-adapted solvents minimize electrolyte disturbances.

Conclusions:

  • Modern, rapidly degradable HES preparations are safer alternatives to older formulations.
  • Lower molecular weight and molar substitution in HES reduce the risk of adverse events.
  • Balanced HES solutions are suitable for perioperative hypovolemia correction with an improved safety profile.