Transient Tachypnea of the Newborn (TTN) results from air-trapping.
Transient Tachypnea of the Newborn (TTN) [pronounced "tuh-KIP-nee-yuh"] appears radiographically as hyperinflation. The lung fields are over expanded. The diaphragms are flattened. The pulmonary markings are primarily concentrated closer to the heart and center sections of the lungs, which is termed to be a "perihilar" [pronounced "perry-HI-ler"] distribution. TTN is due to retained fetal fluids. The course of TTN is that it is transient, that is, it is worse immediately after birth, and then gets better quickly as the fetal fluids are mobilized from the lungs.