What are the main safety cautions or contraindications for Arista AH?

• A. Safe for intravascular use to rapidly control bleeding.
• B. Caution or contraindication in patients with known starch allergy; avoid intravascular or intraluminal use; avoid inhalation or aspiration into the airway; avoid large volumes in confined spaces.
• C. No safety cautions; can be used in any tissue.
• D. Only contraindicated in patients with metal implants.

Answer: (B)

Arista AH is a starch-based topical hemostatic agent, so safety hinges on allergic risk and how the product is used in the body. A starch allergy is a real contraindication because contact with genuine starch can trigger an allergic reaction. It should never be used inside blood vessels or within lumens of the body, because intravascular or intraluminal placement can lead to obstruction or embolic events, which would be dangerous. The powder form can be problematic if inhaled or aspirated into the airway, potentially causing airway irritation or obstruction. In addition, using large volumes in confined spaces raises the risk of airway blockage or difficult removal, and can create local tissue issues. So the best guidance is to avoid use in patients with starch allergy, avoid intravascular or intraluminal application, prevent inhalation or airway aspiration, and avoid large volumes in confined spaces.