|Classification of Acute Severity, Recovery, and Long-Term Disability|
|Acute severity||Mild neurological dysfunction: NIHSS 0–5|
Moderate neurological dysfunction: NIHSS 6–14
Severe neurological dysfunction: NIHSS ≥15
Note: Severity assessment should be performed at the time of diagnosis of any overt and covert CNS injury (Types 1 and 2) to ensure accurate classification
|Stroke recovery||Stroke with complete recovery: mRS score at 30–90 days of 0 or a return to the patient’s pre-stroke baseline mRS score, in the absence of any ongoing new symptoms due to the stroke.|
|Stroke disability||Fatal stroke: death resulting from a stroke where the cause of death is attributable to the stroke.|
Disabling stroke: mRS score ≥2 at 30–90 days, with an increase of at least 1 point compared with the pre-stroke baseline.
Nondisabling stroke: mRS score <2 at 30–90 days, or ≥2 without an increase of at least 1 point compared with the pre-stroke baseline.
Note: Disability assessment applies only to subjects with overt CNS injury (Type 1), and should be performed at 90 ± 14 days after the stroke event.
|Classification of Neurological Event Timing|
|Periprocedural||≤30 days post-intervention|
|Late||>30 days post-intervention|
Note: Event timing should be reported separately for all patients with CNS infarction, and for patients with overt CNS injury.
Abbreviations as in Table 1.