| RDS | TTN | |
| B Lines | Bilateral confluent B-lines No double lung point |
Very compact B lines in the inferior pulmonary fields, not so compact in superior lung field - “Double Lung point” |
| Pleural Line | Thickened and irregular | Normal regular echogenic |
| Evolution of B Line | Persists, no change even after surfactant | Disappears by day two coinciding with clinical improvement |
| Lung Consolidation | Associated lung consolidation may be seen | No lung consolidation |
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