Classification of coronary perforation
| Sr. No | Class | Definition | Risk of tamponade (%) |
|---|---|---|---|
| 01 | I | Focal extraluminal crater without extravasation | 8 |
| 02 | II | Pericardial or myocardial ‘blush’ without contrast agent | 13 |
| 03 | III | Contrast agent ‘jetting’ through a frank (>1 mm) perforation | 53 |