Use National Early Warning Score In The Prognosis Of Stroke Patients In The Emergency Department
Abstract
Introduction: Few scoring systems are used in the emergency department to identify critically ill patients and anticipate patients' deterioration such as National Early Warning Score (NEWS). This study aimed to evaluate NEWS in patients with acute stroke and its relationship with treatment and type of stroke and patient outcome.
Methods: In this prospective cross-sectional descriptive-analytical study, all patients over 18 years of age with a diagnosis of ischemic stroke, who presented through the emergency department, were involved. The variables of interest were collected; the NEWs score was calculated for each patient.
Results: In assessing NEWS and its relationship with outcome based on the ROC curve, the area under the curve was equal to 0.417. Considering the high intensity of NEWS above 7, sensitivity, specificity, positive predictive value, negative predictive value, PLR, and NLR were 16.67%, 98.77%, 83.33%, 74.45%, 13.5, 0.84 respectively. In assessing NEWS and its relationship with stroke type on the ROC curve, the (AUC) was equal to 0.526. Considering the high intensity of NEWS above 7, sensitivity, specificity, positive predictive value, negative predictive value, PLR, and NLR were 8.33%, 94.95%, 16.67%, 88.53%, 1.65, and 0.97 respectively.
Conclusion: In terms of outcome, NEWS seems to have acceptable specificity and positive and negative predictive values. Regarding the type of stroke, NEWS has an acceptable specificity but it only has a negative predictive value about the non-hemorrhagic type of stroke. This means that if the NEWS number is LOW, the probability is that the type of stroke is ischemic and the patient outcome is good.