Integrated Echocardiography and Chest Ultrasound Assessment of Lung Recruitment in Preterm Infants

Inclusion Criteria

• •Infants will be enrolled if they are 32 to 37 weeks of gestational age, have respiratory distress (RD) in the first 24 h of life, intubated and have invasive respiratory support using HFOV. Signs of RD are tachypnea (respiratory rate \> 60/min), grunting, nasal flaring, chest retraction, and need of oxygen supplementation or other respiratory support.