Fig. 8

LUS to guide the adjustting of MV settings. A preterm infant with a gestational age of 31 weeks and a birth weight of 1700g was treated with invasive MV for severe RDS. When the peak inspiratory pressure (PIP) was 0 cm H2O, LUS showed severe snowflake sign-like lung consolidation (A). LUS showed that the degree of consolidation decreased slightly when PIP increased to 20 cm H2O (B). However, the lung consolidation almost disappeared when PIP increased to 30 cm H2O (C). Therefore, the 30 cm H2O of PIP is the most appropriate parameter for this patient