Many, many years ago I happened to be the injecting RN for an IVP on one of our ER MDs, a very nice man.
This was before the days of low-osmolar, nonionic contrast agents, so he was getting Conray 60 slowly injected.
Not surprisingly, he vomited during the injection (happened with roughly 30% of injections).
After he felt better, he said, "I knew this would happen [the vomiting]. I tell all my patients to expect it."
I smiled a little and told him, "You know, only about 30% of those receiving IV contrast will vomit. Others just feel the transient warm sensation and that's it."
His eyes widened in surprise. "REALLY???"
I do think he set himself up for the reaction he had, with his preconceived idea of what to expect.
Who knows how many pts he set up for the same, by instructing them to expect the nausea/vomiting!
Which relates back to the nurse telling the tilt-table pt all the bad stuff he "will" feel (power of suggestion!).
Now, preparing a pt for what he MIGHT feel, or saying something like, "People experience different things with this test, and I want you to tell me what you're feeling, OK?"
Before a cath I'll usually tell them, "Don't be shy, and don't be brave. I do need to know how you're feeling during the test. The information obtained from the test is much more accurate when you tell how you're feeling."
Then, if the pt does feel lightheaded or something, you can reassure him/her that it's transient, that some ppl do feel that way during the test, and it will get better.
Many years ago (seems all my stories start this way, lol!!), I researched contrast reactions, in order to present a short talk to new nurses in orientation.
One article (sorry, don't remember the source!) named the pts at high risk for reactions:
previous reaction to contrast (duh)
diabetics
asthmatics/COPD'rs
previous allergic reactions (to any meds)
PTs WHO ARE ANXIOUS
etc.
In light of the last, highlighted area, I think we as Radiology Nurses can do A LOT toward helping allay fears and decreasing anxieties pre- and intra-procedure, thus possibly averting or decreasing untoward events/reactions.
No firm data/evidence here, just connecting a few dots with anecdotes and observation.
Now, if an event is GONNA happen, by golly it will!
But even if one happens, by your interactions with the pt before and during the procedure, s/he hopefully has trust in you, which may go a long way to helping her/him through said event.
Wordy, ain't I??? lol.
'Nuff here. sorry, the description of the RN talking to the pt just set me off, lol!