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SIR Definition and Grading System of Procedural Complications
| Grade | Description |
|---|---|
| Minor | |
| A | Necessitates no therapy, causes no consequence |
| B | Necessitates nominal therapy, causes no consequence; includes overnight admission for observation only |
| Major | |
| C | Requires therapy, minor hospitalization |
| D | Requires major therapy, unplanned increase in level of care, prolonged hospitalization (> 48 h) |
| E | Results in permanent adverse sequelae |
| F | Results in death |
