Table 1. Demographics of Patients with Intravascular or Extravascular Re-exposure to Iodinated Contrast Media.
| Characteristic | Route of Re-exposure | P | |
|---|---|---|---|
| Intravascular | Extravascular | ||
| Sex (M:F) | 105:152 | 12:8 | 0.105 |
| Age (median, range) | 57, 8–87 | 59, 45–70 | 0.782 |
| Severity of index reaction (%) | 1.000 | ||
| Moderate | 91.4 (235/257) | 95.0 (19/20) | |
| Severe | 8.6 (22/257) | 5.0 (1/20) | |
| Culprit agents | LOCM (n = 257) | LOCM (n = 20) | - |
| Re-exposed agent | LOCM (100%, 733/733) | HOCM (86.7%, 39/45) vs. LOCM (13.3%, 6/45) | < 0.001 |
| Interval days between index reactions and re-exposure (median, range) | 291, 2–1071 | 267, 1–835 | 0.520 |
HOCM = high-osmolar contrast media, LOCM = low-osmolar contrast media