Puncture the left femoral artery at the groin in Seldinger technique and carefully introduce the guidewire. After removing the puncture cannula, introduce a 6F sheath over the indwelling guidewire under fluoroscopic guidance. After removing the wire, administer 5000 IU of heparin saline solution locally and check for pulsatile reflux.
Tips:
1. A severely calcified artery may be difficult to puncture. Care must be taken when puncturing the artery and introducing the guide wire not to dissect the vessel.
2. If percutaneous puncture in both groins fails, make a mini-incision in one groin, expose the common femoral artery there and then puncture under direct vision.