• Rapid breathing
• Grunting noise when exhaling
• Straining of chest and neck muscles with the effort of breathing
• Blue color to skin
• Abnormally rapid heartbeat
• Absence of or long pause in breathing (apnea)

Risk Factors for Developing RDS Premature birth Cesarean delivery (C-section) Boy baby Second-born of twins or multiple births in general Diabetic mother No prenatal care

* IMS DDD Lung Surfactant Market Purchases July 1991 through June 2007. On file, Abbott Nutrition Marketing Research.