Delayed Reaction to IV Contrast (UK)

What is IV Contrast?

• Contrast is a dye that is put into your body through an IV.

• It is used for imaging scans such as CT scans and MRIs.

• The contrast makes blood vessels, organs and other parts of your body show up better on the scan.

What do I need to do after IV contrast?

• Drink lots of fluids. This will help flush the contrast out of your system.

• Drink 2-3 extra glasses or bottles of water within 4 hours of your scan.

What is a contrast reaction?

• A contrast reaction is a bad side effect from the contrast dye.

• It is rare but it does happen.

• They can be mild – such as sneezing, itching, or hives.

• They can be severe – such as trouble breathing, throat swelling, and irregular heart beat.

When do these reactions happen?

• They often happen right after the contrast is injected.

• Some happen hours after going home.  

Go to the nearest Emergency Department right away if you have any of these symptoms after you leave the clinic or hospital.

• Sneezing

•  Itching in your mouth, throat, eyes, ears, or skin

• Rash or hives

• Throwing up or stomach sickness

• High heart rate or “racing” of your heart

• Feeling dizzy or woozy

• Feeling short of breath or like you can’t take a deep breath

• Feeling very anxious for no other reason

It is very important that these reactions be treated. Tell the doctor or nurse that you are having a reaction to IV contrast dye. Do not ignore any sign of a reaction! All reactions must be assessed by a doctor.

Call 911 if you are alone and your reaction is more than mild sneezing or itching.

If you have a reaction, call (859) 323-5321 and ask to speak to the radiology resident on call.
Explain that you have had a contrast reaction. This needs to be added to your medical record.