His Arterial Blood Gas analysis (ABG) showed hypoxemia with PO2/FIO2 < 200. Chest x-rays showed bilateral diffuse non-homogenous opacities [ Figure 2 ], following which a diagnosis of community acquired pneumonia was made. His cardiac functions, as assessed by a surface 2D echocardiogram (2D-echo) showed normal systolic and diastolic functions. Hence, with this acute presentation, bilateral infiltrate, normal cardiac functions and PO2/FIO2 < 200, the patient was diagnosed to have acute respiratory distress syndrome (ARDS).