Assessment of extra vascular lung water busing lung ultrasound. Lung ultrasound will be performed to diagnose EVLW (extravascular lung water). A M. turbo sonosite ultrasound system with pediatric linear probe (frequency 13-6 MHz( megahertz); Fujifilm, sonosite, inc. USA) will be used. Chest ultrasound will be performed using the 12 reg ions method. Intercostals spaces on each side will be examined anteriorly (midclavicular line), laterally (anterior axillary line) and posteriorly (posterior axillary line) (2).