Bedside chest ultrasound examination is especially useful in children with high risk of PTE and in critical general condition. In newborns in severe general condition ultrasound examination of chest should be first imaging test for PTE. It is significant to set on a multicenter study to evaluate the diagnostic value of chest ultrasound in diagnosis of PTE in children.

CysC levels may be elevated in people with normal GFR. Hypertrophy of a single kidney increases with deteriorating kidney function. PT/KL should be verified in future studies as a sonographic marker of kidney impairment.