Table 1.
Characteristics of the variables recorded for the study cohort (no. of cases n = 344).
| Variable | Description |
|---|---|
| Age (years), mean ± σ | 55.05 ± 11.45 |
| Female gender | 219 (63.7%) |
| Aneurysm Diameter (mm), mean ± σ | 7.36 ± 3.51 |
| Aneurysm Neck, mean ± σ | 3.93 ± 1.64 |
| Clip Shape, n (%) | |
| Straight | 201 (58.4%) |
| Curved | 102 (29.7%) |
| Angular | 21 (6.1%) |
| Wrap | 17 (4.9%) |
| Arterial Hypertension, n (%) | |
| Grade II | 145 (42.2%) |
| Grade I | 67 (19.5%) |
| Grade III | 8 (2.3%) |
| Atherosclerosis | 108 (31.4%) |
| Diabetes Mellitus (Type 2) | 17 (4.9%) |
| Obesity, n (%) | |
| Not present | 256 (74.4%) |
| Grade 2 | 53 (15.4%) |
| Morbid | 30 (8.7%) |
| Grade 1 | 2 (0.6%) |
| Preoperative Aphasia | 9 (2.6%) |
| Cognitive Disorder | 118 (34.3%) |
| Intubation | 76 (22.1%) |
| Hemorrhage | 311 (90.4%) |
| Hydrocephalus | 124 (36.0%) |
| Ruptured | 308 (89.5%) |
| Aneurysm Artery, n (%) | |
| A-Comm | 152 (44.2%) |
| MCA | 93 (27.0%) |
| PCA | 35 (10.2%) |
| Pericallosal | 13 (3.8%) |
| P-Comm | 11 (3.2%) |
| Ophthalmic | 11 (3.2%) |
| Choroidal | 7 (2.0%) |
| ICA | 6 (1.7%) |
| Fetal P-Comm | 5 (1.4%) |
| Basilar | 3 (0.9%) |
| Other (*) | 8 (2.3%) |
| Craniotomy, n (%) | |
| Pterional | 178 (51.7%) |
| Frontobasal | 137 (39.8%) |
| Frontobasal Paramedian | 16 (4.7%) |
| Other | 11 (3.2%) |
| Suboccipital | 2 (0.6%) |
| Vasospasm | 101 (29.4%) |
| Glasgow Coma Scale (GCS), n (%) | |
| GCS 14 | 219 (63.7%) |
| GCS 13 | 57 (16.6%) |
| GCS 7 | 33 (9.6%) |
| GCS 15 | 29 (8.4%) |
| GCS 9 | 18 (5.2%) |
| GCS 8 | 16 (4.7%) |
| GCS 12 | 15 (4.4%) |
| Other | 59 (17.1%) |
| Preoperative Hemiparesis, n (%) | |
| 5 | 233 (67.4%) |
| 2 | 63 (18.3%) |
| 3 | 26 (7.6%) |
| 1 | 10 (2.9%) |
| 4 | 10 (2.9%) |
| Other | 3 (0.9%) |
| Fisher Scale, n (%) | |
| Grade 3 | 142 (41.0%) |
| Grade 4 | 98 (28.5%) |
| Grade 2 | 72 (20.9%) |
| Grade 1 | 31 (9.0%) |
| Grade 0 | 2 (0.6%) |
| Glasgow Outcome Scale (GOS), n (%) | |
| GOS 5 | 141 (41.0%) |
| GOS 1 | 77 (22.4%) |
| GOS 4 | 71 (20.6%) |
| GOS 3 | 50 (14.5) |
| GOS 2 | 5 (1.5%) |
| σ—standard deviation; | |
| A-Comm—Anterior Communicating Artery; | |
| MCA—Middle Cerebral Artery; | |
| PCA—Posterior Cerebral Artery; | |
| P-Comm—Posterior Communicating Artery; | |
| ICA—Internal Carotid Artery; | |
| Fetal P-Comm—Fetal Posterior Communicating Artery; | |
| (*) including Carotid Cave, Hypophyseal Artery, Distal Anterior Cerebral Artery, Internal Carotid Artery bifurcation, Posterior Inferior Cerebellar Artery, Vertebral Artery, Anterior Cerebral Artery. |