transient tachypnea of the newborn
Pronunciation: tak-IP-nee-ah
Also written as: TTN — Transient Tachypnea of the Newborn
Respiratory distress in term newborns caused by delayed clearance of fetal lung fluid, typically self-resolving.
Full Definition
Transient tachypnea of the newborn (TTN) is a common cause of respiratory distress in term and late preterm infants, resulting from delayed resorption of fetal lung fluid. The condition is more frequent after cesarean delivery due to absence of thoracic compression during vaginal delivery. Clinical features include tachypnea, mild retractions, and grunting, typically appearing within the first few hours of life. Chest radiographs may show prominent perihilar markings and fluid in the fissures. The condition usually resolves within 24-72 hours without specific treatment.
Usage
Usage note: TTN widely accepted abbreviation; distinguish from 'tachypnea' which is just rapid breathing.
In Context
- "Transient tachypnea of the newborn was suspected given the term infant's mild respiratory distress after cesarean delivery." — Neonatal assessment
- "TTN typically resolves spontaneously within 72 hours without requiring respiratory support." — Neonatology consultation