transient tachypnea of the newborn
Pronunciation: TRAN-zee-ent tak-IP-nee-ah
Also written as: TTN — Transient Tachypnea of the Newborn
Self-limiting respiratory condition in newborns caused by delayed clearance of fetal lung fluid, typically resolving within 24-72 hours.
Full Definition
Transient tachypnea of the newborn (TTN) is a benign respiratory condition characterized by rapid breathing due to retained fetal lung fluid that is normally absorbed during labor and delivery. The condition is more common in infants delivered by cesarean section, large-for-gestational-age infants, and those born to mothers with diabetes. Clinical presentation includes tachypnea (respiratory rate >60), mild retractions, and possible grunting, but typically without significant oxygen requirement. Chest radiographs may show perihilar streaking and fluid in the fissures. Management is primarily supportive with monitoring, and the condition usually resolves spontaneously as lung fluid is reabsorbed through lymphatic and pulmonary capillary systems.
Usage
Usage note: Spell out on first use; TTN acceptable thereafter. Distinguish clearly from more serious respiratory conditions.
In Context
- "The cesarean-delivered infant developed transient tachypnea of the newborn but maintained adequate oxygen saturation on room air." — Admission note
- "Transient tachypnea of the newborn typically resolves within 48 hours without specific intervention." — Medical textbook