In peripheral intervention, which wire sizes are used for access and for intervention, respectively?

In peripheral intervention, which wire sizes are used for access and for intervention, respectively?

• A. .035 inch for access; .018 inch for intervention
• B. .018 inch for access; .035 inch for intervention
• C. .035 inch for both access and intervention
• D. .018 inch for both access and intervention

Answer: (A)

The main idea is using a sturdy, larger wire to establish reliable access and sheath support, then switching to a smaller wire to navigate and treat the lesion. A 0.035 inch wire provides good pushability and stability for getting the sheath in place and creating an initial track through the arterial access. Once access is secured, crossing the lesion and delivering interventional devices is easier with a smaller, more navigable wire. An 0.018 inch wire can pass through tighter, tortuous segments and works well with microcatheters and low-profile devices, enabling effective intervention without the bulk of a larger wire. That combination—0.035 for access, then 0.018 for intervention—best fits typical peripheral procedure workflows.

The main idea is using a sturdy, larger wire to establish reliable access and sheath support, then switching to a smaller wire to navigate and treat the lesion. A 0.035 inch wire provides good pushability and stability for getting the sheath in place and creating an initial track through the arterial access. Once access is secured, crossing the lesion and delivering interventional devices is easier with a smaller, more navigable wire. An 0.018 inch wire can pass through tighter, tortuous segments and works well with microcatheters and low-profile devices, enabling effective intervention without the bulk of a larger wire. That combination—0.035 for access, then 0.018 for intervention—best fits typical peripheral procedure workflows.