i am a long term lurker and havent contributedÂ in a long time but have an important question. i recently was reading our most current hospital policy and it says a "central line tip" can terminate in a "great vessel" and it gives examples of "great vessels" as including the subclavian and internal jugular. I am at this point reeling. Has the defenition of "central" changed???? thanks. i will be waiting anxiously for a reply.