Table 4.
Univariate analysis of factors for postoperative AIH
| Variables | AIH | No AIH | P Value |
|---|---|---|---|
| Patients | 23(%) | 425(%) | |
| Gender | 0.113 | ||
| Male | 15 (65.2) | 339 (79.8) | |
| Female | 8 (34.8) | 86 (20.2) | |
| Age (years) | 0.908 | ||
| < 70 | 12 (52.2) | 227 (53.4) | |
| ≥ 70 | 11 (47.8) | 198 (46.6) | |
| Head trauma event | 14 (60.9) | 281 (66.1) | 0.605 |
| Medical history | |||
| Hypertension | 12 (52.2) | 160 (37.6) | 0.163 |
| Diabetes | 2 (8.7) | 57 (13.4) | 0.754 |
| Heart disease | 1 (4.3) | 46 (10.8) | 0.494 |
| Cerebral infarction | 1 (4.3) | 27 (6.4) | 1.00 |
| Renal failure dialysis | 0 (0) | 3 (0.7) | – |
| Antiplatelet or anticoagulant drugs | |||
| Antiplatelet drugs | 3 (13.0) | 29 (6.8) | 0.221 |
| Anticoagulant drugs | 1 (4.3) | 14 (3.3) | 0.552 |
| Preoperative clinical symptoms | |||
| Headache | 15 (65.2) | 187 (44.0) | 0.046 |
| Dizziness | 0 (0) | 139 (32.7) | – |
| Motor weakness | 14 (60.9) | 239 (56.2) | 0.662 |
| Nausea/vomiting | 2 (8.7) | 29 (6.9) | 0.668 |
| Speech impairment | 0 (0) | 17 (4.0) | – |
| Unsteady gait | 1 (4.3) | 7 (1.6) | 0.346 |
| Incontinence | 0 (0) | 11 (2.6) | – |
| Memory decline | 0 (0) | 14 (3.3) | – |
| GCS at admission | 0.756 | ||
| 15 | 21 (91.3) | 364 (85.6) | |
| 3–14 | 2 (8.7) | 61 (14.4) | |
| Operation side | 0.683 | ||
| Unilateral hematoma | 16 (69.6) | 278 (65.4) | |
| Bilateral hematoma | 7 (30.4) | 147 (34.6) | |
| Radiological characteristics | |||
| Midline shift | 0.367 | ||
| < 10 mm | 17 (73.9) | 275 (64.7) | |
| ≥ 10 mm | 6 (26.1) | 150 (35.3) | |
| Preoperative maximal thickness | 0.043 | ||
| < 20 mm | 9 (39.1) | 90 (21.2) | |
| ≥ 20 mm | 14 (60.9) | 335 (78.8) | |
| Hematoma density | 0.924 | ||
| Hyper-dense | 7 (30.4) | 126 (29.6) | |
| Hypo-dense | 4 (17.4) | 67 (15.8) | |
| Mixed density | 10 (43.5) | 200 (47.1) | |
| Iso-dense | 2 (8.7) | 32 (7.5) | |
| Treatment | |||
| Atorvastatin perioperatively | 9 (39.1) | 162 (38.1) | 0.922 |
| Anesthesia | 0.249 | ||
| Local | 13 (56.5) | 188 (44.2) | |
| General | 10 (43.5) | 237 (55.8) | |
| Intraoperative irrigation | 15 (65.2) | 361 (84.9) | 0.020 |
| Injection urokinase after operation | 0 (0) | 12 (2.8) | – |
| Duration of drainage, day | 0.307 | ||
| 1 | 1 (4.3) | 62 (14.6) | |
| 2 | 19 (82.7) | 287 (67.5) | |
| ≥ 3 | 3 (13.0) | 76 (17.9) | |
GCS Glasgow Coma Scale, AIH Acute intracranial hemorrhage