Common Factors Predisposing Patient to Contrast Reactions
| Factor | Predisposing characteristic |
|---|---|
| Age | Infants and those older than 60 y |
| Sex | Females > males |
| Underlying medical conditions | Asthma, heart disease, dehydration, renal disease, diabetes |
| Hematologic conditions | Myeloma, sickle cell disease, polycythemia |
| Medications | NSAIDs, IL-2, β-blockers, biguanides |
| Contrast-related | >20 mg iodine, faster injection rate, intraarterial, previous contrast reactions |
NSAIDs = nonsteroidal antiinflammatory drugs; IL-2 = interleukin-2.