Fig. 5

Noninvasive ventilation is required for severe TTN. LUS showed confluent B-lines and alveolar-interstitial syndrome (AIS) in both lungs (A:left lung, B:right lung), and no consolidation with air bronchograms were found, which was consistent with the ultrasound imaging features of TTN. Patients may have a certain degree of dyspnea, and noninvasive MV can be given firstly