Cardiac stent placement includes puncture and guidewire placement, imaging to localize the diseased vessel, stent placement, and wound dressing. 1. The guidewire is punctured in the femoral artery in the groin, and then the guidewire is inserted and travels along the arterial vessels to the heart. 2. To localize the diseased vessel, the guidewire is passed through the coronary artery opening at the root of the aorta into the coronary artery, and then contrast is released to identify the stenotic vessel for stenting. 3. Placement of the stent, first in the coronary stenosis into a balloon that can be inflated and expanded, and then in the periphery of the balloon into a stent that can be expanded, with the help of the expansion of the balloon will be stented in the coronary stenosis. 4. Wound dressing, after withdrawing the guidewire, a pressure dressing is applied to the femoral artery puncture site. If you have any questions about the procedure, or if there is any postoperative discomfort, it is recommended that you consult a physician as soon as possible.