Arista AH And Surgical Hemostats Practice Test

What best describes the mechanism by which Arista AH promotes hemostasis?

Chemical cross-linking of proteins. Dry starch-based powder forms a physical matrix that concentrates platelets and coagulation factors. Gel formation through oxidation. Swelling to physically block the vessel.

Correct Answer:

Dry starch-based powder forms a physical matrix that concentrates platelets and coagulation factors.

Explanation:

Arista AH works by providing a dry starch-based powder that forms a physical matrix on the bleeding surface. This matrix concentrates platelets and coagulation factors at the site, speeding up the body's natural clotting process to form a stable hemostatic plug. It operates through a mechanical, scaffold-like effect rather than chemical interactions. It isn’t based on chemical cross-linking, oxidation-induced gel formation, or swelling to block the vessel.

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