ABSTRACT
Endovascular therapy is performed using some type of delivery system: an access sheath, a guiding sheath, or a guiding catheter. Whichever one is used represents a ‘‘system’’ in the sense that the selected guidewire, balloon catheter, stent, therapeutic catheter, etc. must Qt through the sheath and be able to travel over the chosen guidewire. Access for endovascular therapy has several goals: to secure the puncture site, maintain guidewire placement, deliver the therapeutic catheters, and maintain access for interval arteriography of the treatment site and its out Pow bed. Selecting the best means of access is about anticipating the scope of the procedure and the sizing required. Choose the right access and you set yourself up for success. Problems with access are a common reason for a procedure to be prolonged, unnecessarily challenging, or complicated. Patience and planning are required to achieve safe and straightforward access.
