What is the accuracy of the NIHSS score for predicting LVO?
According to a meta-analysis, the NIHSS score has a sensitivity of 73% and a specificity of 74% when used as a prediction instrument for diagnosing LVO in confirmed ischemic stroke patients who are being assessed by a neurologist or emergency physician in the ED. A threshold of 10 would provide the optimal balance between sensitivity and specificity, while a threshold of 6 would have 87% sensitivity and 52% specificity.