Effectiveness of Lung Ultrasound for Diagnosis of Acute Respiratory Distress Syndrome in Mechanically Ventilated Patients
Abstract
Background: Acute respiratory distress syndrome (ARDS) requires rapid diagnosis for early intervention and improved outcomes. Lung ultrasound may be a reasonable alternative to chest X-ray for the identification of ARDS but the effectiveness of lung ultrasound in ARDS diagnosis is still uncertain. The objective of the study is to explore the efficacy of lung ultrasound (LUS) for diagnosis of ARDS in mechanically ventilated patients.
Methods: A cross sectional study was conducted among 75 patients in Critical Care Centre, Combined Military Hospital, Dhaka from September 2021 to January 2022. The study was approved by the ethical committee in the hospital. In this study, the Bedside Lung Ultrasound in Emergency (BLUE) protocol for the immediate diagnosis of acute respiratory failure was followed. Purposive sampling technique was used. Data were analyzed by using Statistical Package For Social Sciences (SPSS) version 25.0.
Results: A total of 75 patients were assessed. Among them male were 42(56%) and female 33(44%). The median age of patients was 48 years (Interquartile range 30-60). Primary diagnoses were pneumonia (22.67%), pulmonary oedema (20%), sepsis (20%) and trauma (17.33%). A total of 34(45.33%) patients fulfilled ‘CXR-based Berlin Definition’ and a total of 36(48%) patients were diagnosed as ARDS by ‘LUS-based Berlin Definition’. Considering the ‘CXR-based Berlin Definition’ as reference standard, sensitivity, specificity, positive predictive value, negative…
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