Table 4.
Stroke Subtypes According to Vascular Territory of Acute Ischemic Lesions
| Mechanism | ACA (n=49) | MCA (n=1341) | ICA (n=33) | PCA (n=230) | VA (n=71) | BA (n=305) | PICA (n=144) | AICA (n=8) | SCA (n=10) | BZ (n=79) | Multiple (n=432) | P Value* |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LAA | 65.3 | 34.2 | 51.5 | 28.7 | 60.6 | 30.2 | 59.0 | 50.0 | 10.0 | 89.9 | 32.4 | <0.001 |
| SVO | 0.0 | 25.6 | 0.0 | 36.1 | 18.3 | 58.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | <0.001 |
| CE | 10.2 | 22.8 | 33.3 | 19.1 | 8.5 | 3.9 | 15.3 | 25.0 | 60.0 | 5.1 | 32.2 | <0.001 |
| OD | 2.0 | 1.7 | 0.0 | 3.0 | 11.3 | 1.0 | 4.2 | 0.0 | 0.0 | 1.3 | 6.9 | <0.001 |
| Two or more | 4.1 | 3.9 | 3.0 | 3.5 | 0.0 | 3.0 | 0.7 | 0.0 | 0.0 | 1.3 | 4.4 | 0.456 |
| Negative | 18.4 | 10.4 | 6.1 | 9.6 | 1.4 | 3.0 | 15.3 | 0.0 | 10.0 | 2.5 | 21.3 | <0.001 |
| Incomplete | 0.0 | 1.4 | 6.1 | 0.0 | 0.0 | 0.3 | 5.6 | 25.0 | 20.0 | 0.0 | 2.8 | <0.001 |
Values are percentage of patients. ACA indicates anterior cerebral artery; AICA, anterior inferior cerebellar artery; BA, basilar artery; BZ, border zone infarction; CE, cardioembolism; ICA, internal carotid artery; Incomplete, incomplete evaluation; LAA, large‐artery atherosclerosis; MCA, middle cerebral artery; Multiple, multiple‐territory infarction; Negative, negative evaluation; OD, other determined etiology; PCA, posterior cerebral artery; PICA, posterior inferior cerebellar artery; SCA, superior cerebellar artery; SVO, small vessel occlusion; Two or more, two or more causes identified; VA, vertebral artery.
P values were obtained from comparisons of vascular territories according to the presence or absence of individual stroke subtypes using Pearson chi‐square tests or Fisher's exact tests, as appropriate.