Neurology · Stroke
Pittsburgh Response to Endovascular Therapy (PRE) Score calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Allowed range: 18–120 years
Age in completed years. The equation adds one point for each year.
Allowed range: 0–42 points
Baseline NIH Stroke Scale, from 0 to 42. The equation adds two points for each point on the scale.
Allowed range: 0–10 points
Alberta Stroke Program Early CT Score on the pretreatment CT, from 0 to 10. The equation subtracts ten points for each point.
Result
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Clinical inputs
- Age (years)Accepted range: 18 to 120
- NIH Stroke Scale (points)Accepted range: 0 to 42
- ASPECTS on the pretreatment CT (points)Accepted range: 0 to 10
Primary source
Rangaraju S et al. Pittsburgh Response to Endovascular therapy (PRE) score: optimizing patient selection for endovascular therapy for large vessel occlusion strokes. J Neurointerv Surg. DOI: 10.1136/neurintsurg-2014-011351. PMID: 25320054. Table 2 weights age 1, NIHSS 2, and ASPECTS −10, giving PRE = age in years + 2×NIHSS − 10×ASPECTS. Successful recanalization was associated with better outcomes for scores from −24 through 49, and not for scores below −24 or 50 or higher. (2015)
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