TABLE I.
Patient and Procedure Characteristics
| Patient and procedure characteristics | Number (percent) or median [interquartile range] |
|---|---|
| Age | |
| Less than 1 year | 713 (31) |
| 1–10 years | 1,121 (48) |
| 11–18 years | 487 (21) |
| Weight | |
| Less than 4 kg | 256 (11) |
| 4–9 kg | 634 (27) |
| Greater than or equal to 10 kg | 1,431 (62) |
| Underlying diagnosis | |
| No structural heart disease | 254 (11) |
| Isolated defects | 460 (20) |
| Pulmonary hypertension | 47 (2) |
| Complex two ventricle physiology | 936 (40) |
| Single ventricle physiology | 619 (27) |
| Type of procedure | |
| Hemodynamic catheterization | 544 (23) |
| Interventional catheterization | 1,618 (70) |
| Biopsy and coronary angiography | 159 (7) |
| Highest procedure risk group | |
| 1 | 1,534 (66) |
| 2 | 422 (18) |
| 3 | 355 (15) |
| Duration of case (hours) | |
| Less than 1 | 384 (17) |
| 1–1.9 | 985 (44) |
| 2–2.9 | 536 (24) |
| Greater than or equal to 3 | 311 (14) |
| Contrast—weight-based dose (cm3/kg) | 3.9 [2.0;6.0] |