Procedural Characteristics
| All Unruptured Aneurysms | Wide-Neck Aneurysms | |||||
|---|---|---|---|---|---|---|
| Stent-Coil (n = 137) | Coil Alone (n = 224) | P Value | Stent-Coil (n = 85) | Coil Alone (n = 73) | P Value | |
| Aspirin alone | 8.0% | 23.2% | .0002 | 4.7% | 28.8% | <.0001 |
| Clopidogrel alone | 5.1% | 4.5% | .78 | 3.5% | 1.4% | 0.62 |
| Aspirin + clopidogrel | 78.1% | 37.1% | <.0001 | 82.4% | 37.0% | <.0001 |
| Antiplatelet use not recordeda | 8.8% | 35.3% | <.0001 | 9.4% | 32.9% | .0003 |
| Procedure time, min | 134.2 | 117.8 | .02 | 147.5 | 135.2 | .30 |
| No. of coils | 6.9 | 7.1 | .70 | 8.5 | 10.1 | .07 |
| Bare metal coils | 49.6% | 50.9% | .82 | 48.2% | 53.4% | .52 |
| Matrix coils | 50.4% | 49.1% | .82 | 51.8% | 46.6% | .52 |
| Packing density | 26.2% | 24.0% | .07 | 26.4% | 21.1% | .002 |
| Technical success | 97.8% | 100% | .054 | 97.6% | 100% | .50 |
| Occlusion assessment | ||||||
| Raymond 1 | 21.1% | 33.9% | .02b | 18.6% | 27.1% | .25c |
| Raymond 2 | 25.4% | 25.6% | .98b | 27.1% | 30.5% | .67c |
| Raymond 3 | 53.5% | 40.6% | .03b | 54.3% | 42.4% | .18c |
↵a No antiplatelet use recorded in these subjects: for an individual subject, this could mean no aspirin or clopidogrel was used or that data are missing.
↵b Core lab occlusion assessment for the 81% of patients who had assessable angiograms after the procedure.
↵c Core lab occlusion assessment for the 82% of patients who had assessable angiograms after the procedure.