Lung ultrasound will be performed with the patient in supine position. The phased-array transducer will be used for lung ultrasound, and will be used for the assessment of B-lines, which arise from the pleural line to the bottom of the screen and move with the sliding lung. The investigators will quantify the B- line burden in lung regions using the validated Eight-region method: Each hemithorax is divided into four quadrants, upper and lower anterior and upper and lower lateral divided longitudinally by the anterior axillary line and transversely by the 2nd intercostal space. If 3 or more B-lines (any size and spaced apart by any distance) are present in a particular region, that region is considered positive. Two or more positive regions per side define a "B-line pattern."