Table 2.
Performance of percutaneous coronary intervention
| General statistics | |
|---|---|
| • Success rate of procedure | >95% |
| • Symptoms improved after procedure | 90% |
| • Complications* | 2% |
| • Restenosis | 15% (range 5-50%) |
| • Duration of procedure | 15 minutes-3 hours |
| • Access point: | |
| Femoral artery | 95% |
| Radial or brachial artery | 5% |
| • Time in hospital after procedure: | |
| Overnight | 60% |
| Day case | 20% |
| Longer | 20% |
| • Intravenous contrast load | 100-800 ml |
| • X ray dose to patient | 75 Gy/cm2† |
| Special conditions | |
| • Success of direct procedure for acute myocardial infarction | >95% |
| • Success for chronic (>3 month) occluded vessel | 50-75% |
| • Mortality for procedure in severe cardiogenic shock | 50% |
| • Restenosis: | |
| Vessels <2.5 mm in diameter, >40 mm length | 60% |
| Vessels >3.5 mm diameter, <10 mm length | 5% |
| • Lesion recurrence later than 6 months after procedure | <5% |
| • Re-restenosis: | |
| After repeat balloon dilatation | 30-50% |
| After brachytherapy | <15% |
*
Death, myocardial infarction, coronary artery bypass surgery, cerebrovascular accident
†
Equivalent to 1-2 computed tomography scans