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Related Concept Videos

Introduction to Hemostasis01:05

Introduction to Hemostasis

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Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
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The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
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A self-gelling starch-based sponge for hemostasis.

Wenjie Huang1, Juan Wu1, Zhenhua Huang1

  • 1Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China.

Journal of Materials Chemistry. B
|January 19, 2023
PubMed
Summary
This summary is machine-generated.

A novel self-gelling starch sponge (St-SP sponge) effectively controls severe bleeding without compression. This advanced hemostat shows superior performance over current treatments for emergency wound care.

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Area of Science:

  • Biomaterials Science
  • Hemostasis Research
  • Emergency Medicine

Background:

  • Uncontrolled bleeding is a major cause of mortality, necessitating advanced hemostatic agents.
  • Current hemostats like starch-based powders (PerClot®) require compression, limiting use on irregular wounds.
  • There is a critical need for effective, non-compressive hemostats for emergency applications.

Purpose of the Study:

  • To develop a novel self-gelling starch sponge (St-SP sponge) for hemorrhage control.
  • To evaluate the hemostatic efficacy of the St-SP sponge compared to a commercial product.
  • To assess the biocompatibility and self-healing properties of the new hemostatic material.

Main Methods:

  • Synthesis of a boronic acid-modified thiol starch sponge (St-SP sponge).
  • Evaluation of blood absorption, self-gelling, and self-healing capabilities.
  • In vitro and in vivo hemostatic performance testing, including comparison with PerClot® on rabbit liver models.
  • Assessment of hemocompatibility and cytocompatibility.

Main Results:

  • The St-SP sponge demonstrated rapid blood absorption, self-gelling, and self-healing to seal bleeding sites.
  • It effectively initiated the coagulation cascade, promoting erythrocyte and platelet aggregation.
  • The St-SP sponge achieved significantly faster hemostasis (61.5 s) without compression compared to PerClot® (169 s) on irregular liver wounds.
  • Excellent hemocompatibility and cytocompatibility were observed.

Conclusions:

  • The developed St-SP sponge offers superior hemostatic abilities compared to commercial options.
  • Its self-gelling and non-compressive properties make it ideal for emergency first-aid of irregular wounds.
  • The St-SP sponge represents a promising new material for advanced hemorrhage control.