Radiographic and magnetic resonances contrast agents: Essentials and tips for safe practices

Table 1 Risk factors that predispose patients to contrast medium reactions

Patients with a prior history of allergy to CM (3-6 folds)

Patients with a prior history of allergic reactions to drugs and foods

Patients with generalized atopic tendencies (e.g., asthma and hay fever)

Dehydration states

Age extremes (less than 5 yr and older than 60 yr)

Serious illness and chronic debilitating conditions, e.g., CVS diseases and renal failure

Anemia

Certain co-medications, e.g., β-blockers and metformin

Malignancies

Patient’s anxiety due to public concerns about CM-induced reaction

CM: Contrast media; CVS: Cardiovascular.