What is the primary use of guide catheters in AVM treatment?

Guide catheters serve a critical role in the treatment of arteriovenous malformations (AVMs) primarily by facilitating vascular access and navigation. They are designed to provide a stable platform that allows interventional radiologists to navigate the complex vascular anatomy associated with AVMs. The use of guide catheters enables precise delivery of therapeutic devices and materials to targeted areas within the vascular system.

In the context of AVM treatment, accessing the appropriate vessels is crucial for effective intervention. This is particularly important since the anatomy around AVMs can be intricate and variable. The guide catheter aids in reaching the specific feeding vessels of the AVM, ensuring that subsequent procedures, such as the delivery of embolic agents, can be performed accurately and with greater control.

While the delivery of embolic agents is also a significant aspect of AVM treatment, it follows the initial vascular access provided by the guide catheter. Therefore, the primary purpose of these catheters in this context is to ensure safe and effective access and navigation within the vascular system.