ABSTRACT
After percutaneous access has been achieved (Chapter 2) and guidewires and catheters have become familiar tools (Chapter 3), the next step is guidewire and catheter passage to the desired location. The goal of the intended procedure should be well proscribed prior to the puncture. Whether an arteriogram or a therapeutic intervention is planned will in Puence the puncture site choice and the approach. Options should be considered for converting the procedure from a strategic one to a therapeutic one if the need should arise. Access for endovascular therapy is discussed in Chapter 12.
