All contrast agents have the potential for causing allergic reactions that can range from mild (e.g., nausea and vomiting) to severe anaphylaxis (e.g., cardiovascular collapse and central nervous system depression leading to death if untreated). Table 10.1 lists the range of possible adverse reactions to iodine contrast media. Reactions happen quickly and usually occur within minutes of administration of the contrast agent. Such reactions can occur in anyone.
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