simplified 8-item nihss to identify acute ischemic stroke ......simplified 8-item nihss to identify...
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Simplified 8-item NIHSS to identify acute
ischemic stroke patients with large vessel
occlusion: a pilot study
Jelle Demeestere, MD
Neurovascular fellow, John Hunter Hospital, Newcastle, NSW, Australia
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Introductiont-PA
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Introduction
• The ideal screening tool
– Fast
– Objective
– Highly reproducable
– High sensitivity and specificity for large vessel occlusion
– Based on widely used patient assessment methods
– Easy to use by different medical professional and
ambulance officers/paramedics
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PAST protocol, 2010Pre-hospital Ambulance aSsessment and rapid Triage protocol
Garnett AR, Marsden DL, Parsons MW, Quain DA,
Spratt NJ, Loudfoot AR et al. The rural prehospital acute
stroke triage (PAST) trial protocol: a controlled trial for rapid
facilitated transport of rural acute stroke patients to a regional
stroke centre. Int J Stroke. 2010;5:506-513.
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Interrater agreement
- Overall agreement
- Agreement when used as a cut-off
50 patients, near-simultaneous & blinded assessment
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Validation of the NIHSS8 score
235 pt
? Large Vessel
Occlusion
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Validation of the NIHSS8 score
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Validation of the NIHSS8 score
AUC = 0.83
ROC
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Validation of the NIHSS8 score
Sensitivity & specificity
vs accuracy
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Validation of the NIHSS8 score
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Summary and take-home points
• Endovascular treatment: powerful but limited– Time
– Availability
• Early large vessel occlusion detection in pre-hospital
phase may change treatment plan
• NIHSS8: reliable, fast, good LVO prediction
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Future directions and limitations
• Need for prospective trial– confirm patient benefit
– determine optimal distance/time limit
– Proof for endovascular therapy only in specific subset of
patients?
• Dependent on regional stroke facilities– Use of thrombolytic therapy
– Performance
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Thank you for your kind attention.
Questions?
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Prognosis in stroke (not LVO only) with thrombolysis
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Time-dependency of endovascular treatment
Prabhakaran JAMA 2015
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Interrater agreement
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Possible comments