Transient tachypnea of the newborn (TTN) may occur more often in neonates with certain risk factors.


Risk factors for TTN:

(1) preterm birth (lower gestational age)

(2) cesarean section, especially after preceding labor

(3) male infant

(4) macrosomia

(5) maternal asthma

(6) family history


Uncertain risk factors:

(1) maternal sedation (with neonatal sedation)

(2) perinatal asphyxia

(3) nonreassuring fetal status

(4) nulliparity

(5) history of infertility therapy


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