Incidence of MES on MES-1 and MES-2 scans is listed according to the following variables: modality of treatment, heparin, clopidogrel, heparin ± clopidogrel, extent of occlusion ± heparin, and size of aneurysm ± heparin
| Variable | MES-1 Scan | MES-2 Scan | New Infarct n(% of Group) | New Symptom at Discharge n(% of Group) | ||||
|---|---|---|---|---|---|---|---|---|
| n(% of Total) | MES Mean (SD) | t Test | n (% of Total) | MES Mean (SD) | t Test | |||
| Total | 123 (100) | 3.9 (12.4) | 123 (100) | 0.8 (2.8) | 2 (1.6) | 1 (0.8) | ||
| With stent | 33 (26.8) | 6.8 (18.2) | 33 (26.8) | 1.6 (4.4) | 2 (6.1) | 1 (3.0) | ||
| Heparin | ||||||||
| On heparin | 119 (96.7) | 3.4 (10.9) | P <. 05 | 10 (8.1) | 6 (7.2) | P < .001 | 1 (0.9) | 0 (0) |
| Off heparin | 4 (3.3) | 18.8 (35.5) | 113 (91.9) | 0.4 (1.3) | 1 (25) | 1 (25) | ||
| Clopidogrel | ||||||||
| On clopidogrel | 94 (76.4) | 3.5 (11.8) | NS | 105 (85.4) | 0.9 (3.0) | NS | 2 (2.1) | 1 (1.1) |
| Off clopidogrel | 28 (22.7) | 5.3 (14.4) | 18 (14.6) | 0.3 (1.4) | 0 (0) | 0 (0) | ||
| Heparin ± clopidogrel | ||||||||
| On heparin, on clopidogrel | 93 (75.6) | 2.8 (9.5) | NS | 10 (8.1) | 6 (7.2) | 1 (1.1) | 0 (0) | |
| On heparin, off clopidogrel | 26 (21.1) | 5.6 (14.9) | 0 (0) | 0 (0) | 0 (0) | |||
| Extent of occlusion | On heparin | Off heparin | All | |||||
| Complete (100%) | 91 (74.0) | 3.4 (11.0) | NS | 85 (69.1) | 0.4 (1.4) | NS | 1 (0.8) | 0 (0) |
| Near complete (>90%) | 24 (19.5) | 25 (20.3) | ||||||
| Incomplete (<90%) | 4 (3.3) | 1.5 (3) | 3 (2.4) | 0 (0) | 1 (20) | 1 (20) | ||
| Size of aneurysm | On heparin | Off heparin | All | |||||
| <10 mm | 97 (78.9) | 3.0 (9.4) | NS | 91 (74.0) | 0.3 (1.0) | NS | 0 (0) | 0 (0) |
| ≥10 mm | 22 (17.9) | 5.1 (16.0) | 22 (17.9) | 0.7 (2.3) | 2 (8.3) | 1 (4.2) | ||
| Stent-assisted | On heparin | Off heparin | All | |||||
| With stent | 32 (26.0) | 4.8 (14.2) | NS | 29 (23.6) | 0.3 (1.2) | NS | 2 (6.1) | 1 (3.0) |
| Without stent | 87 (70.7) | 2.9 (9.4) | 84 (68.3) | 0.4 (1.4) | 0 (0) | 0 (0) | ||
Note:—Total number of patients and relative percentage of total are given. Significance of differences for the absolute number of occurrences is calculated by a Student t test. Total number of new infarcts or new symptoms at the time of discharge is shown, with relative percentage of respective group.