What is Emergency Medicine -When should I check a patient for an large vessel occlusion (LVO) if they have stroke symptoms?
When to obtain a CTA to assess for LVO is a topic on which there is no clear agreement. When compared to other LVO prediction models, the NIHSS fared the best, according to a 2018 meta-analysis. For LVO on CTA, a score of.6 had an 87% sensitivity and 52% specificity, whereas a value of.10 had a 73% sensitivity and 74% specificity. It is crucial to follow institutional policies and engage with your consultants early in the patient's course because neither of these thresholds has an appropriate sensitivity or specificity on their own.
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