🧠 VAN Screen (Vision Aphasia Neglect)
UseWhen to use: rapid EMS/ED cortical LVO screen.
StrataPositive → consider EVT-capable routing; negative ≠ stroke ruled out.
LimitsWhen not to use: as sole stroke triage tool. · Pitfall: missing LVO without arm weakness. · Pair with RACE/NIHSS locally.
SourceTeleb MS et al. VAN screen
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
Arm gate.
When to use
When to use: rapid EMS/ED cortical LVO screen.
How it works
VAN+ if arm weakness AND (≥1 of vision, aphasia, neglect).
Key points
- Arm gate.
- Any V/A/N = positive.
- Next: stroke code / CTA.
References
- Teleb MS et al. VAN screen
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Arm weakness present | No |
|---|---|
| Visual disturbance (field cut / gaze preference / diplopia context) | No |
| Aphasia | No |
| Neglect / extinction | No |
→VANNegative (no arm weakness gate)
- Cue：VAN requires arm weakness first
| Arm weakness present | Yes (required gate) |
|---|---|
| Visual disturbance (field cut / gaze preference / diplopia context) | Yes |
| Aphasia | Yes |
| Neglect / extinction | Yes |
→VANPositive
- Cue：Arm weakness + cortical sign → LVO pathway consideration
Verification & sources · governance
FAQ
Frequently asked questions
- Does VAN Screen (Vision Aphasia Neglect) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is VAN Screen (Vision Aphasia Neglect) calculated in practice? Can you show a worked example?
- Inputs: Arm weakness present No, Visual disturbance (field cut / gaze preference / diplopia context) No, Aphasia No, Neglect / extinction No → Result: VAN Negative (no arm weakness gate)（Cue: VAN requires arm weakness first） Inputs: Arm weakness present Yes (required gate), Visual disturbance (field cut / gaze preference / diplopia context) Yes, Aphasia Yes, Neglect / extinction Yes → Result: VAN Positive（Cue: Arm weakness + cortical sign → LVO pathway consideration）