What type of catheters are often used in angiographic procedures?

• A. Balloon catheters
• B. Sheath catheters
• C. Single-use catheters
• D. Tube catheters

Answer: (B)

In angiographic procedures, sheath catheters are commonly used because they facilitate the passage of other catheters and instruments into the vascular system. Sheath catheters are designed to allow for the rapid exchange of various devices while maintaining access to the vascular system, which is critical during interventional procedures. They provide a stable access point, minimizing the risk of complications such as vascular injury or bleeding.

Balloon catheters, while important in certain specific angiographic interventions like angioplasty, are less versatile than sheath catheters when it comes to providing access for diagnostic or procedural purposes. Single-use catheters can also be utilized but generally do not focus on maintaining vascular access throughout the procedure like sheath catheters do. Tube catheters may be used in various applications but do not provide the specialized function that sheath catheters offer in the context of angiography, particularly regarding the need for compatibility with different interventional devices.

Thus, sheath catheters are prioritized in angiographic practice for their ability to enhance the efficiency and safety of vascular access during procedures.