What type of coating is typically found on the outside of a guidewire?

The typical coating found on the outside of a guidewire is Teflon. This coating is essential for enhancing the guidewire's performance during vascular procedures. Teflon provides low friction properties, allowing the guidewire to move easily through blood vessels and navigate the complex anatomical structures with minimal resistance. This is critical for reducing the risk of damage to the vessel walls and facilitating smoother tracking of devices like catheters over the guidewire.

Teflon's biocompatibility and lubricious surface contribute to its effectiveness, making it the material of choice in many vascular applications. This coating helps ensure that the guidewire not only functions well but also minimizes the risk of complications during interventional procedures.