Before a cardiovascular intervention visit, how should I organize information about allergies and previous adverse reactions?

You can organize it item by item as 'name of substance or medication, time of occurrence, specific symptoms, severity, treatment at that time, and whether there was re-exposure', and note whether the source of information is reliable. Previous medical records, test reports, and related photos can be brought along; if you cannot remember a name, do not guess, but ask the original medical institution to help look it up. During the visit, proactively hand it to the doctor for verification, and let professionals determine whether this information affects the examination or treatment plan. If you are currently experiencing difficulty breathing, altered consciousness, or rapidly worsening systemic discomfort, seek emergency medical services immediately.