Pushability describes which property?

Pushability describes which property?

• A. How easy the catheter can be pushed forward without prolapsing
• B. Ability to cross a lesion
• C. Profile of the catheter tip
• D. Compliant nature of the balloon

Answer: (A)

Pushability is about how easily the catheter’s shaft transmits your pushing force to the distal tip and how well it resists buckling or prolapsing as you advance it. A catheter with good pushability moves forward smoothly with each push because the shaft effectively carries the force to the tip. This is mainly determined by shaft stiffness and column strength; making the shaft stiffer or using braiding can improve pushability, though it may trade off with other qualities like trackability in tortuous vessels. This concept is distinct from crossing a lesion, which depends more on trackability and the tip design to navigate through or around obstructions. It’s also not about the profile of the catheter tip, which concerns its shape and outer diameter, nor the balloon’s compliant nature, which relates to how the balloon expands rather than how the shaft transmits push.

Pushability is about how easily the catheter’s shaft transmits your pushing force to the distal tip and how well it resists buckling or prolapsing as you advance it. A catheter with good pushability moves forward smoothly with each push because the shaft effectively carries the force to the tip. This is mainly determined by shaft stiffness and column strength; making the shaft stiffer or using braiding can improve pushability, though it may trade off with other qualities like trackability in tortuous vessels.

This concept is distinct from crossing a lesion, which depends more on trackability and the tip design to navigate through or around obstructions. It’s also not about the profile of the catheter tip, which concerns its shape and outer diameter, nor the balloon’s compliant nature, which relates to how the balloon expands rather than how the shaft transmits push.