Accuracy of lung ultrasound and chest X-rays in diagnosing acute pulmonary oedema in patients presenting with acute dyspnoea in emergency department.

To determine the diagnostic accuracy of lung ultrasound and chest X-ray in diagnosing Acute Pulmonary Oedema in patients presenting with acute dyspnoea in emergency department, a study was conducted at the emergency department of Shifa International Hospital, Islamabad, from July 31, 2018 to January 31, 2019. A total of 225 patients presenting with dyspnoea and satisfying the inclusion criteria were assessed through clinical examination, lung ultrasound (LUS) and chest X-ray. The results of chest X-ray and lung ultrasound were compared with clinical diagnosis. The study revealed sensitivity of chest X-ray and LUS (60.16% versus 91.05%), specificity (66.67% versus 91.18%), positive predictive value (68.52% versus 92.56%) and the negative predictive values (58.12% versus 89.42%) respectively. The present study revealed that the LUS has better accuracy than chest X-ray for diagnosis of acute pulmonary oedema.