Coatings on guide wires can include which option to reduce clot risk?

• A. Heparin coating
• B. Hydrophilic coating
• C. Silicone coating
• D. Titanium coating

Answer: (A)

The surface of intravascular guide wires can be modified to reduce thrombus formation on the device. Heparin coating is designed to create a non-thrombogenic surface by releasing or presenting anticoagulant activity that inhibits platelet adhesion and thrombin generation on the wire. This directly lowers the risk of clot formation as the wire is manipulated within the vessel.

Hydrophilic coating, by contrast, mainly makes the surface very slippery to reduce friction and ease navigation, which helps minimize vessel trauma but does not actively suppress coagulation. Silicone coating also focuses on lubricity, not anticoagulation, and titanium coating isn’t used for reducing clot risk. So the coating that specifically targets clot risk is the heparin coating.