Lung Ultrasound-guided Fluid Resuscitation in Neonatal Septic Shock

For the LUGFR group, therapy was applied based on the same treatment guidelines, and initial lung ultrasonography was performed after enrollment as baseline assessment of lung. The lung ultrasound was conducted using the Doppler ultrasound diagnostic instrument (Philips CX50) at a probe frequency range of 8 to 12 MHz. Lung ultrasonography was conducted using the 12-region method that included the anterior, lateral, and posterior walls on both sides of the lung, which was focused on the condition of A-lines, B-lines (including confluent B-line and compact B-lines), lung consolidation and pleural effusion