Nurses are not expendable. They are in short supply, and there is division of labor and responsibilities for important reasons.
The disposable worker class is what I am; Nursing assistants, and this is an invasive procedure. At most, we can assist with the procedure by helping to position the patient, hold the collection end of the catheter, and hold the collection container. Anything that involves a tube or other object being inserted into a human body requires either a specialist certification in that discipline (such as inserting a trach tube, and having an RT perform it), or an RN, as a minimal requirement. At least here in the states anyway.
I suspect this is actually a 2-fold requirement.
1) Insurance company needs to have documentation that there was no indication of a pre-existing condition that might be worsened by the procedure, and that there is documentation that a screening (of some kind) was done to assure that this was not the case, before performing the procedure.
2) Being an onerous prerequisite that requires getting out sonogram gel, sterilizing additional equipment, additional prep time, additional staff, and additional levels of oversight in terms of QC on the equipment, et al--- it discourages staff from prescribing a straight-cath willy nilly; and this is "Intentional."
I whole-heartedly agree with Chairman that it is painfully obvious even to lowest level lackeys like myself when there is a distended bladder. A simple (but gentle) palp of the lower abdomen will readily reveal this finding. I have performed such palpation myself many times, and have alerted my Nurse when I make such a finding for verification and remedy. Other things I check for with a distended abdomen include firmness of the descending bowel area (indicating bowel obstruction), or signs of herniation. A physician is more than qualified to make the determination that a straight-cath is appropriate (or not) under the VAAAST majority of circumstances. Usually, the need to void the patient is vastly greater than the risks of potential complications.
Low level lackeys like myself are the eyes and ears of superior staff. While we are easier to train (and thus more disposable), reliable and competent staff, even at my level, are never something you want to throw out.