It's extremely safe to do one! i didn't have an injury after doing >5, 000, it's also very safe to have one done.
The risk of a serious complication is <1 in a 1000 (0.1% risk). Most people have a sore spot where the catheter
is inserted and a bruise is typical. Heart attack
, serious bleeding, and death are exceedingly rare. Injury to the blood vessel used happens rarely & can be repaired.