The Oxfordshire Community stroke subclassification system19
| Total anterior circulation syndrome (TACS);implies a large cortical stroke in middle cerebral, or middle and anterior cerebral artery territories |
| A combination of: |
| • New higher cerebral dysfunction (eg dysphasia, dyscalculia, visuospatial disorder) AND |
| • Homonymous visual field defect AND |
| • An ipsilateral motor and/or sensory deficit involving at least two out of three areas of the face, arm or leg |
| Partial anterior circulation syndrome (PACS); implies cortical stroke in middle or anterior cerebral artery territory |
| Patients with two out of the three components of the TACS OR new higher cerebral dysfuction alone OR a motor/sensory deficit more restricted than those classified as a LACS (eg isolated hand involvement). |
| Lacunar syndrome (LACS);implies a subcortical stroke due to small vessel disease |
| • Pure motor stroke |
| • Pure sensory stroke |
| • Sensorimotor stroke |
| • Ataxic hemiparesis |
| nb: evidence of higher cortical involvement or disturbance of consciousness excludes a lacunar syndrome |
| Posterior circulation syndrome (POCS) |
| • Ipsilateral cranial nerve palsy with contralateral motor and/or sensory deficit |
| • Bilateral motor and/or sensory deficit |
| • Disorder of conjugate eye movement |
| • Cerebellar dysfuction without ipsilateral log-tract involvement |
| • Isolated homonymous visual field defect |