This catheter can help you if you are unsure as to whether or not you are in an artery.
The diagnosis of an arterial puncture happens when you take the syringe off your needle and see bright red pulsatile flow.
If you manage to diagnose an arterial insertion of a central line on an xray , something more than just the arterial insertion has gone terribly wrong
In fact, the syringe will often fill by itself when you are in an artery due to the pressures
Do not aim for "bloodless" procedures. It is IMPORTANT that you see the blood color (bright red versus dark red), and flow of the blood (pulsatile versus non-pulsatile)