Exchange of guidewires is a procedure used in interventional procedures.
Exchangeable guidewires are characterized by being longer than normal guidewires, typically 180-300 cm long, and are exchanged with the contrast catheter for selective placement of the catheter in the event of vascular tortuosity.
For patients with poor vascular conditions, or when preparing for stenting or balloon dilatation, where the target vessel is tortuous or small and access is difficult, the exchange guidewire can be used to deliver to the target vessel in conjunction with a catheter that is more compliant, and then withdrawn from the catheter, retaining the guidewire, and delivered along the exchange guidewire into the stent delivery device or balloon catheter for treatment.
Extended information:
Operation steps
1. After completion of radial artery puncture, the ultra-smooth guidewire is fed into the contrast catheter but not out of the catheter port, and the contrast catheter is fed into the arterial sheath, at which point the guidewire begins to feed.
2. The guidewire passes through the radial artery, the brachial artery, the subclavian artery, the ascending aorta, and then enters the base of the aortic sinus and makes a bend, at which point the guidewire can be secured.
3. Finally, the catheter is fed along the guidewire to the base of the sinus, and the operation is complete.