Syringeless CVC Placement

I thought we weren’t supposed to let go of the wire lest the wire disappear into the thorax. I had a partner that had that happen and the Pt needed thoracotomy! This video shows the free unsecured wire.

The angiocaths in most kits are too soft to be used in fluffier patients because all the soft tissue collapse them.

This was the only one that didn't make a ton of sense to me. There didn't seem to be much advantage to NOT having the syringe attached (you can still do exactly this technique with a syringe attached). Conversely, having the syringe attached gives you a easier-to-grip handle on the needle, AND gives you an extra method of confirmation and vessel finding if the direct visualization is proving difficult. What am I missing?

As an aside, in our shop at least we generally in-line ultrasound the wire to verify that it is in the correct vessel before dilating, which serves the same purpose as ultrasounding the softcath here...

Air embolus not a worry?

Easy to do the same technique, leave syringe ON the angiocath, enter vessel, take needle out, put syringe back on angio, wire through syringe. Cleaner and safer to me. Confirm placement same with wire in vessel before dilation.