ENGLISH ABSTRACT
JOURNAL ARTICLE
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[Hypersensitivity reaction to radio contrast media: diagnosis, prevention and treatment].

Harefuah 2012 July
More than 70 million radiographic examinations with radio contrast media are performed worldwide each year. The incidence of adverse reactions to radio contrast media is 5-13%. Adverse reactions include hypersensitivity reactions, chemotoxic reactions and renal toxicity. Hypersensitivity reactions to radio contrast media range from mild pruritus to life-threatening emergency. The differential diagnosis between hypersensitivity reaction to radio contrast media and chemotoxic reaction is challenging. The incidence of chemotoxic reactions is mainly affected by the chemical structure of the radio contrast media and the rate of infusion. The incidence of hypersensitivity radio contrast media reaction is affected by age and by the presence of asthma and other atopic diseases. The diagnosis of hypersensitivity reaction to radio contrast media is based on clinical manifestations. The additional value of laboratory tests is limited and questionable. In case of hypersensitivity radio contrast reaction, the infusion should be stopped immediately, airways should be protected and fluids, oxygen and drugs should be given. Prophylactic treatment before its administration may prevent hypersensitivity reactions to radio contrast media.

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