What is the approximate coverage area of the 1g Arista AH?

• A. ~50 cm²
• B. ~29 cm²
• C. ~83 cm²
• D. ~100 cm²

Answer: (B)

Coverage area for a given hemostatic agent depends on how much material you apply and how thinly you spread it over the bleeding surface. Arista AH is a porous, absorbent material that, when laid out in a thin, even layer, forms a matrix that soaks up blood and helps initiate clotting. For a 1 gram piece, the practical amount you can spread in a thin layer covers roughly 29 square centimeters. This reflects how the material distributes over a surface while staying dry enough to stay in place and prevent clumping.

The other numbers would require either a thicker layer or a larger amount of material than a single gram typically provides, which isn’t how you’d usually apply one gram in practice. If more area needs coverage, you’d apply additional material in smaller portions rather than trying to cover everything with a single gram.