Table 4.
Primary and assisted primary patency rate for different primary interventions.
| Patency rate | 6 months | 12 months | 18 months | 24 months | |
|---|---|---|---|---|---|
| Primary | PTA | 77.3% (17/22) | 75.0% (15/20) | 72.2% (13/18) | 58.3% (7/12) |
| PTS (BMS) | 75.0% (15/20) | 42.1% (8/19) | 38.9% (7/18) | 27.8% (4/18) | |
| PTS (SG) | 86.7% (13/15) | 73.3% (11/15) | 64.3% (9/14) | 25.0% (1/4) | |
| Assisted primary | PTA | 86.4% (19/22) | 85.0% (17/20) | 83.3% (15/18) | 75.0% (9/12) |
| PTS (BMS) | 100% (20/20) | 94.7% (18/19) | 77.8% (14/18) | 55.6% (10/18) | |
| PTS (SG) | 93.3% (14/15) | 93.3% (14/15) | 92.9% (13/14) | 75.0% (3/4) | |
PTA, percutaneous transluminal angioplasty; PTS, percutaneous transluminal stenting; BMS, bare metal stent; SG, stent graft.