Clinical reference
Surfactant · Natural lung surfactant · Neonatology
Calfactant (Infasurf®) is a natural surfactant from calf lungs for prevention and treatment of respiratory distress syndrome in premature infants. 3 mL/kg/dose (35 mg phospholipids/mL) intratracheally; repeat every 12 hours up to 3 doses. Prophylactic in <29 weeks GA within 30 min of birth; rescue in <72 hr with confirmed RDS. Intratracheal only.