Allergy to dye IV or the contrast of iodine


intravenous (iv) The dye is a contrast dye, given through the vein. It is also known as a radiocontset of the media (RCM).It is widely used in the United States for radiological studies, such as angiograms, x-rays, magnetic resonance display (MRI) and calculated tomography (CT).

Adverse reactions to RCM are quite common, although they are very Rare allergic.The allergic reactions to RCM are not really allergic nature, which means that there is no allergic antibody predex, which causes the reaction. More well, RCM acts releasing directly to Miemine and other chemical products from cells fat.

BSIP / UIG / GETTY images
Radiopontrose media types

Two main types used by contrasts,They are the iodized contrast (used in most TC scans) and the Gadolinium-based contrast (used in most MRI explorations, which use a contrast dye).Two types are quite different and a crossed reaction is not considered.

within the type of contrast farming,There are two main subtypes:

  • high degrees of contrast means (hocm)
  • osmolality of non-ionic means of low contraction (locm)

UBM has become a preferred IV dye in recent yearsSecurity record However, it is more expensive than Hocm.

Types of reactions

These are reactions that can occur when I entered RCM:

The probability that the reaction brightness is much lower than with hocm, as well as the probability of reaction to the Gadolin- contrast based (as used in MRCS) even then.

Risk factors

these factorsvisiblesuministre to people with the highest risk of reactions to RCM:

  • past reactions to RCM
  • History of allergy
  • History HistoryDisease
  • Kidney history disease
  • Tomandobeta-The
  • blocks become the elderly (with an increased risk of serious reactions)
Seafood myth )

Despite the popular myth,The presence of seafood and mollusk allergies does not put it at the highest risk of reaction to RCM. allergy allergy allergy is associated with the protein content of these products, and not the content of iodine.

In addition, if you have an allergy for current cleaning products or iodide iodides, the greatest risk of reactions increase In RCM.


Unfortunately, there is no possibility of diagnosing allergies to RCM. The tests of skin and radio communication tests (RAST) were not useful in diagnostics.

The small test doses are often not beneficial, with reports of severe and dangerous reactions in life reactions that arise after small quantities provided under conditions,As well as severe reactions with large doses of RCM that arise after the derivation. As a person transfers a small dose of dye IV.

allergy iv-dye can only be diagnosed after the symptoms occur.Otherwise, it can only determine that a person enhances the risk of reaction.


Treatment of acute reaction to RCM in a similar way to part of the unfavorable reaction of any reason.Treatment may include epinetries of injection and antihistamine preparations, as well as the use of intravenous fluids for low blood pressure and impact.

The frequency in patients with the history of pseudo reactions-Non-operative allergics to RCM for treatment with a combination of oral corticosteroids, such as prednisone and antihistamines, such as diphenhydramine (benadryl) to any future contrast administration. .

Patients with a history of serious reactions should avoid radiocontre environments, with the exception of specific and difficult circumstances under the guidance of a health care provider.

Word of the Meds information received

If you are concerned about the potential reaction to RCM, talk with your health care provider and the benefits of performing a test with RCM and are alternatives available.

In patients with a history of severe reactions, radio construction should be completely avoided, with the exception of specific extreme circumstances when observed at the discretion of medical care.

Frequently asked questions

  • , it is considered safe, but there is a risk of fibrosis of the nephrogen system, a rare disease, which mainly affects the skin, as well as a Contrast nephropato that causes the loss of renal function. These complications are more common among people with existing kidney diseases. If you have an allergy story, you may need to take medications before taking contrast to avoid a serious allergic reaction.

  • Нет.There may be some kind of discomfort when the IV line is inserted, but you should not feel pain when the dye is entered.However, you can have some sensations:

    • Warm,fishing sense through your body in a few seconds
    • metallic tensioner in your mouth
    • but you It is not designed

  • Any allergy history increases your risk of reaction to contrast agents.However, your health care provider can provide medications you can take to scan to avoid reaction.While mollusc allergies and seafood sometimes suggest that they indicate a specific risk of iodine contrast reaction, do not evidence that it is true.

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