The document describes the steps for catheterization procedures. The patient is placed on an x-ray table and secured with ECG leads, blood pressure monitoring, and an IV. The catheter site is cleaned and prepped. Local anesthesia is administered and general anesthesia may be used for young children. A needle is used to puncture the vein or artery and a wire is inserted. The catheter is then passed over the wire into the vessel. Common sites are the femoral vein, antecubital vein, brachial or femoral artery. The procedures can be used for coronary arteriography or transseptal techniques.