Which catheter type has side holes associated with its function?

The correct answer is the Simmons catheter. It is specifically designed for use in interventional procedures that require the catheter to navigate through the vascular system while still allowing for effective drainage or delivery of fluids.

Simmons catheters have side holes that enhance their functionality, allowing for greater control over fluid delivery. These side holes help distribute the contrast or therapeutic agents evenly, minimizing complications and ensuring that the target area is adequately reached. This feature is particularly beneficial in complex vascular anatomy, where precise placement is critical.

In contrast, the Omni and Pigtail catheters have different designs and intended uses. The Omni catheter is primarily known for its unique multi-side hole design that allows for optimal contrast injection in specific imaging scenarios. The Pigtail catheter features a curled end designed for drainage but does not primarily rely on side holes for its function, as it is constructed for direct contact with the inner vascular wall and relies on its coiled shape to retain its position. The Balloon catheter, used for dilation and occlusion, does not have side holes either as its primary function is focused on expanding and maintaining pressure within ducts or vessels.

Understanding the design and function of each catheter type is crucial in interventional radiology, particularly when selecting the appropriate catheter for a