From: Diagnostic value of bedside lung ultrasound and 12-zone score in the 65 cases of neonatal respiratory distress syndrome and its severity
Lung ultrasound manifestation
Score
Smooth A-line or less than 3 isolated B-lines
0
Scattered clear B-line
1
A large number of B-lines (partial fusion)
2
A large number of fused B-lines (waterfall sign)
3
Consolidation of lung
4