list the diagnostic tests for which the nurse should determine whether the patient is allergic to iodine.?

Answer 1

Pamy, we generally don't do tests to confirm/exclude iodine allergy in imaging patients. We simply ask if the patient has ever had iodinated contrast and if he suffered an adverse reaction, and if so, how bad was it. We ask if they have a "known" allergy to iodine.

Thankfully it's begining to fall out of favour, but many history sheets still have the nurse ask if the patient is allergic to shellfish, and often the patient may offer this info voluntarily. Most modern Radiologogists recognize that most if not all patients with allergies to shellfish are reacting to proteins contained within them, not to the Iodine contained inside. Still, many centres remain terribly nervous that should an adverse event occur that this will somehow lead to litigation, and therefore decline to inject Iodinated contrast in such patients who are not pre-medicated or to have their ordering physician document that he/she authorizes the administration of Iodinated contrast despite being notified of "potential risks." That's purely CYA stuff.

Answer 2

If you mean blood tests, possibly blood alcohol because the skin is prepared with an iodine solution to avoid interfering with the test.

If you mean other types of tests, anything that involves injection of radio-opaque material (NOT CALLED DYE!!) that contains iodine.