I only have personal experience to add. I once received a patient shortly after cardiac arrest. Sepsis was the original diagnosis. The intensivist placed an emergent femoral central line, blood return was dark and appeared routine. Usual medications and treatment continued (levo, neo, abx, propofol , crystalloids etc) throughout the day. Later in the day when rechecking labs the patient had stabilized more and I noticed the blood in the tubing was pulsatile. Hooked it up to a transducer and obtained an arterial tracing.
I called the intensivist, lines changed, femoral arterial line removed, incident report filed.
A few days later the patient left ICU and I lost track of the patient. I don't know of any terrible complications but it has made me more alert to a central line placed on a hypotensive, hypoxic patient emergently.