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

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

Answer: (B)

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.