[Retracted] Profound Effect of Pulmonary Surfactant on the Treatment of Preterm Infants with Respiratory Distress Syndrome

Table 1

Diagnostic criteria for acute respiratory distress syndrome.

Diagnostic parameters		Diagnostic criteria
Mode of onset		Known clinical impairment, new or worsening respiratory symptoms within 1 week of acute onset
Chest imaging		Decreased translucency of both lungs—cannot be made by pleural effusion, lobar opacification/pulmonary atelectasis, or nodules completely
Causes of pulmonary edema		Explained
Oxygenation	Mild	Oxygenation index: 200∼300, and PEEP/CPAP ≥ 5 cm H2O
	Moderate	Oxygenation index: 100∼200, and PEEP/CPAP ≥ 5 cm H2O
	Severe	Oxygenation index: , and PEEP/CPAP ≥ 5 cm H2O