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KMID : 1035620230110010009
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Allergy Asthma & Respiratory Disease
2023 Volume.11 No. 1 p.9 ~ p.17
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Management of hypersensitivity reactions to contrast media
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Seo Jang-Ho
Jeong Ji-Ung
Yun Jeong-Eun
Lee Suh-Young
Kang Hye-Ryun
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Abstract
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As imaging technologies have become essential for diagnosing various diseases, the use of contrast agents is rapidly expanding. As a result, hypersensitivity reactions (HSRs) to contrast agents have also increased. However, protocols for managing, diagnosing, and preventing these reactions are not fully established yet. Since the guidelines for contrast agent hypersensitivity suggested by domestic and international academic societies are not standardized and sometimes difficult to follow in medical facilities, there is a need for practical recommendations in a real-world setting. This review introduces the strategy to manage, diagnose, and prevent HSRs to contrast agents, which have been successfully implemented at Seoul National University Hospital for a decade. First, every single HSRs should be documented in the medical records because a previous history of hypersensitivity to contrast agents is the most significant risk factor for developing HSR to iodinated contrast media. Secondly, avoidance of culprit agents is the main strategy for preventing recurrences of HSRs to contrast agents. Thirdly, it is important to identify nonsensitized contrast agents using skin tests for future exposure to contrast media. In addition to skin testing, side chains of iodinated contrast media may provide a clue to reactive contrast agents. Fourthly, provocation tests can be performed in selected cases with a nonreactive agent based on the skin testing and side chain commonness. Prior to performing imaging studies, premedication can be applied stratified to the severity of the index HSR. All of these procedures are safe and prove to be executable in the medical facilities.
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KEYWORD
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Contrast media, Hypersensitivity, Skin tests, Secondary prevention
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