Perioperative Fluid Therapy in Pediatric Patients Undergoing Penile Hypospadias Repair

Lung ultrasound with a curvilinear probe (DDED) is performed in all patients in a supine position on the lateral wall of the chest at approximately the level of the lower ribs using an ultrasound probe at a frequency of 4-12 MHz (AcusonX300, Siemens Korea, Seoul, South Korea). The mean number of B-lines detected on the ultrasound image and the percentage of patients who showed B-lines on their images were recorded. The mean of three measurements is used. Inter-observer variability is estimated to be 0.766 (95% confidence interval 0.675-0.847).