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Transient tachypnea of the newborn

Transient tachypnea of the newborn
Classification & external resources
ICD-10 P22.1
ICD-9 770.6
DiseasesDB 32373
MedlinePlus 007233
eMedicine ped/2597  radio/710

Transient tachypnea of the newborn (TTNB, or "Transitory tachypnea of newborn") is a respiratory problem seen in the newborn shortly after delivery. It consists of a period of rapid breathing (more than the for newborns normal 40-60 times a minute). It is likely due to retained lung fluid, and common in 35+ week gestation babies who are delivered by caesarian section without labour. Usually, this condition resolves over 24-48 hours. Treatment is supportive and may include supplemental oxygen and antibiotics. The chest X-Ray shows hyperinflation of the lungs including prominent pulmonary vasular markings, flattening of the diaphragm, and fluid in the horizontal fissure.


  • 1. Due to the higher incidence of TTN in newborns delivered by caesarean section, it has been postulated that TTN could result from a delayed absorption of fetal lung fluid from the pulmonary lymphatic system. The increased fluid in the lungs leads to increased airway resistance and reduced lung compliance.
  • 2. Pulmonary immaturity has also been proposed as a causative factor. Levels of phosphatidylglycerol (an indicator of lung maturity) was found to be negative in certain newborns.
  • 3. Mild surfactant deficiency has also been suggested as a causative factor.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Transient_tachypnea_of_the_newborn". A list of authors is available in Wikipedia.
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