Table 3.
Radiological findings and stroke etiologies
| Ischemic IOS (n = 182)a | |
|---|---|
| Vascular territory of acute infarcts, n (%) | |
| Single territory | 60 (33.0) |
| Multiple territory | 122 (67.0) |
| Angiographic findings, n (%) | |
| Large-artery occlusion | 18 (9.9) |
| Large-artery stenosis > 50% | 33 (18.1) |
| Etiology of acute infarcts, n (%) | |
| Large-artery disease | 5 (2.7) |
| Small-vessel disease | 3 (1.6) |
| Cardioembolism | 91 (50.0) |
| Undetermined etiology | 72 (39.6) |
| Two or more causes | 26 (14.3) |
| Incomplete study | 38 (20.9) |
| Negative study | 8 (4.4) |
| Other determined etiology | 11 (6.0) |
| Hemorrhagic IOS (n = 36) | |
|---|---|
| Intracerebral hemorrhageb | 33 (91.7) |
| Location of hemorrhage | |
| Supratentorial | 26 (72.2) |
| Infratentorial | 6 (18.2) |
| Supratentorial and infratentorial | 1 (3.0) |
| Volume of hemorrhage, ml, median (IQR) | 23.8 (13.6−67.5) |
| Intracerebral hemorrhage score, median (IQR) | 3.5 (2.0−4.0) |
| Etiology | |
| Coagulopathy | 24 (75.0) |
| Medication (antiplatelet agents or anticoagulants) | 2 (6.3) |
| Hypertensive | 1 (3.1) |
| Cerebral amyloid angiopathy | 1 (3.1) |
| Unknown | 5 (15.6) |
| Subarachnoid hemorrhage | 3 (8.3) |
| Modified Fisher scale | |
| 1 | 1 (33.3) |
| 4 | 2 (66.7) |
| Etiology | |
| Ruptured aneurysm | 1 (33.3) |
| Unknown | 2 (66.6) |
IOS intensive care unit-onset stroke, IQR interquartile range, MRI magnetic resonance imaging, CT computed tomography
aIncluding 6 patients with hemorrhagic transformation: 3 patients with hemorrhagic infarction type I on the initial brain MRI; 1 patient with hemorrhagic infarction type II on the initial brain CT scan; and 2 patients with hemorrhagic infarction type II on the follow-up CT scan within the first week of the diagnosis of ischemic stroke [28]
bIncluding 2 patients with cerebral infarct: 1 patient with right frontoparietal lobar hemorrhage showed multiple acute infarcts on the left cerebral hemisphere on the initial CT scan; and 1 patient with extensive bilateral lobar hemorrhage extending into subarachnoid space showed acute temporal cortical infarct on the follow-up CT scan 7 days after the diagnosis of hemorrhagic stroke