The objective of this study was identifying the accuracy of barcode sign using lung ultrasound in diagnosing pneumothorax presented to Emergency department with acute respiratory failure. This was cross sectional observational study conducted between March 2017 and March 2018 on patients 16 patients older than 18 years suspected to have pneumothorax presented to Emergency department with acute respiratory failure who were admitted to ICU. Patients were excluded retrospective from the study if there were multiple etiologies of respiratory failure. All patients subjected to lung ultrasound examination by emergency physician who not involved in the management of the patients. Lung ultrasound diagnosis was compared with the final ICU diagnosis as the gold standard. The specificity, sensitivity, positive predictive value (PPV) and negative predictive (NPP) of pulmonary ultrasound in diagnosis pneumothorax as compared with final ICU diagnosis were %, 100 %, 100 % and % respectively lung ultrasound can be used with high accuracy in diagnosis of pneumothorax in Emergency Department. | The accuracy of barcode sign in diagnosis of pneumothorax associated with acute respiratory failure in emergency department
