Comparison of two scores of short term serious outcome in COPD patients.

INTRODUCTION: Chronic Obstructive Pulmonary Disease (COPD) related visits to the emergency department have increased substantially during the past decade. An important challenge facing emergency physicians when treating COPD patients is deciding on disposition. The aim of this study was to evaluate Integrated Pulmonary Index scoring to guide the disposition decisions of emergency physicians by comparing its compatibility with Ottawa COPD Risk Score.

METHODS: This is a prospective methodological study, in which we compared the accuracies of the Integrated Pulmonary Index and Ottawa COPD Risk Score in predicting of the short-term serious outcomes in patients admitted to the emergency department with COPD exacerbation. Patients who admitted to our emergency department between 01.01.2019-31.03.2019 were evaluated.

THE RESULTS: Among the 208 patients, there were 154 (74.0%) short-term serious outcomes. The AUCs were 0.915 and 0.943 for Integrated Pulmonary Index and Ottawa COPD Risk Score, respectively. The difference between AUCs for two scores was not statistically significant. The best cut-off point for Integrated Pulmonary Index and Ottawa COPD Risk Score were ≤3 and >4, respectively. For these best cut-off points, the sensitivity and specificity of Integrated Pulmonary Index were 92.9 and 87.1, respectively. The sensitivity and specificity of Ottawa COPD Risk Score were 99.3 and 85.2, respectively. Besides, the accuracy of Integrated Pulmonary Index was 91.3, and the accuracy of Ottawa COPD Risk Score was 95.7.

CONCLUSIONS: Integrated Pulmonary Index was a potential candidate for evaluating respiratory status and prediction of short-term severe events in patients with acute COPD exacerbation in emergency departments.