Central line placement. Close-up of a catheter being sutured into place by a surgeon during central line placement. This process, the insertion of a central venous catheter, also called CVP insertion, is where surgeons place a catheter into a large vein in a patient's neck, chest or groin. This enables them to inject drugs or fluids, take blood samples, and monitor the central venous pressure. For a sequence showing central line placement, see clips K003/3590 to K003/3594.