TTN
Also written as: TTN — transient tachypnea of the newborn
Transient tachypnea of the newborn, a temporary breathing condition caused by delayed fluid clearance from fetal lungs.
Full Definition
TTN (transient tachypnea of the newborn) is a common respiratory condition affecting newborns, characterized by rapid breathing due to delayed clearance of fetal lung fluid after birth. This self-limiting condition typically occurs in term or late preterm infants, particularly those born via cesarean section, as they miss the mechanical compression of the birth canal that helps expel lung fluid. Symptoms include tachypnea (rapid breathing), mild retractions, and sometimes grunting, but unlike more serious respiratory conditions, infants with TTN generally maintain good oxygenation. The condition typically resolves within 24-72 hours as the lymphatic system and breathing efforts clear the remaining lung fluid.
Usage
Usage note: Sometimes called 'wet lung' but TTN is the preferred medical term.
In Context
- "The term infant developed TTN following elective cesarean delivery." — Admission diagnosis
- "TTN resolved spontaneously by 48 hours of age without intervention." — Discharge summary