Conlusion
Our assessment method allows a semiquantitative use of LUS findings and seems promising for further applications in neonatal critical care. The LUS high-risk patterns shows good reliability to predict resipratory support need in late-preterm and term infants who manifested mild respiratory difficulty.

List of abbreviations

LUS: Lung ultrasound
STARD: Standards for the Reporting of Diagnostic Accuracy Studies
AUC: Area under the curve
ROC: Receiver operating characteristic curve
NICU: Neonate intensive care unit
RDS: Respiratory distress syndrome
TTN: Transient tachypnea of the neonate
MAS: Meconium aspiration syndrome
PTX: Pneumothorax
CPAP: Continuous positive airway pressure
SN: Serial number
MV: Mechanical ventilation
PS: Pulmonary surfactant
PEEP: Positive end-expiratory pressure
TcSO2: Transcutaneous oxygen saturation
GA: Gestational age
BW: Birth weight;
SGA: Small for gestational age;
SD: Standard deviation;
CI: Confidence interval;
DB: Discrete B-line
RR: Respiratory rate
HR: Heart rate;