cliot (version 1.0.0)

fast_ed_score: Field Assessment Stroke Triage for Emergency Destination (FAST-ED)

Description

Calculates the FAST-ED score to identify stroke patients in the prehospital setting who are likely to have a Large Vessel Occlusion (LVO) and may benefit from direct transport to a Comprehensive Stroke Center for thrombectomy. The score evaluates facial palsy, arm weakness, speech changes, eye deviation, and denial/neglect.

Usage

fast_ed_score(facial_palsy, arm_weakness, speech_changes, eye_deviation,
              denial_neglect)

Value

A list containing:

FAST_ED_Score

The calculated total score (Range 0-9).

Likelihood

Risk assessment for LVO (Score >= 4 suggests High Likelihood).

Recommendation

Triage guidance for hospital destination.

Arguments

facial_palsy

Numeric (0 or 1). 0: Normal or minor paralysis. 1: Partial or complete paralysis.

arm_weakness

Numeric (0, 1, or 2). 0: No drift. 1: Drift, or some effort against gravity. 2: No effort against gravity, or no movement.

speech_changes

Numeric (0, 1, or 2). 0: Absent. 1: Mild to moderate impairment. 2: Severe, global aphasia, or mute.

eye_deviation

Numeric (0, 1, or 2). 0: Absent. 1: Partial deviation. 2: Forced deviation.

denial_neglect

Numeric (0, 1, or 2). Extinction/Inattention. 0: Absent. 1: Extinction to one modality. 2: Extinction to both modalities.

References

Lima FO, Silva GS, Furie KL, et al. Field Assessment Stroke Triage for Emergency Destination: A Simple and Accurate Prehospital Scale to Detect Large Vessel Occlusion Strokes. Stroke. 2016;47(8):1997-2002. doi:10.1161/STROKEAHA.116.013301

Examples

# Example 1: High Probability of LVO
# Partial Face(1), No Arm Effort(2), Severe Speech(2), Forced Eyes(2), No Neglect(0)
# Score = 7
fast_ed_score(1, 2, 2, 2, 0)

# Example 2: Low Probability
# Minor Face(0), Arm Drift(1), Mild Speech(1), No Eyes(0), No Neglect(0)
# Score = 2
fast_ed_score(0, 1, 1, 0, 0)