pittsburgh_response_endovascular_score: Pittsburgh Response to Endovascular Therapy (PRE) Score

In cliot: Clinical Indices and Outcomes Tools

Pittsburgh Response to Endovascular Therapy (PRE) Score

Description

Calculates the PRE Score to predict functional outcome at 90 days (defined as mRS 0-2) in patients with large vessel occlusion acute ischemic stroke undergoing endovascular therapy (thrombectomy). The score utilizes pre-procedure variables: Age, NIHSS, ASPECTS, and pre-stroke modified Rankin Scale.

Usage

pittsburgh_response_endovascular_score(age, nihss_score, aspects_score, pre_stroke_mrs)

Arguments

age	Numeric. Patient age in years.
nihss_score	Numeric. National Institutes of Health Stroke Scale score (0-42).
aspects_score	Numeric. Alberta Stroke Program Early CT Score (0-10).
pre_stroke_mrs	Numeric. Pre-stroke modified Rankin Scale (0-5).

Details

Scoring System:

• Age: <60 (0), 60-69 (2), 70-79 (4), >=80 (6).

• NIHSS: <10 (0), 10-15 (2), 16-20 (4), >=21 (6).

• ASPECTS: 10 (0), 8-9 (2), <=7 (4).

• Pre-stroke mRS: 0 (0), 1 (2), >=2 (4).

The total score ranges from 0 to 20. Lower scores correlate with higher probability of good functional outcome.

Value

A list containing:

PRE_Score	The calculated total score.
Interpretation	Prognostic implication regarding 90-day functional independence.

References

Jadhav AP, et al. The Pittsburgh Response to Endovascular therapy (PRE) score: predicting functional outcome after endovascular therapy for acute ischemic stroke. J Neurointerv Surg. 2020.

Examples

# Example 1: Good Prognosis Candidate
# Age 55 (0), NIHSS 12 (2), ASPECTS 10 (0), Pre-mRS 0 (0)
pittsburgh_response_endovascular_score(55, 12, 10, 0)

# Example 2: Poor Prognosis Candidate
# Age 82 (6), NIHSS 22 (6), ASPECTS 6 (4), Pre-mRS 3 (4)
pittsburgh_response_endovascular_score(82, 22, 6, 3)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.