This definition appears rarely
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Samples in periodicals archive:
Some newborns' breathing during the first hours of life is more rapid and labored than normal because of a lung condition called transient tachypnea of the newborn (TTN).
The most common etiology of neonatal respiratory distress is transient tachypnea of the newborn; this is triggered by excessive lung fluid, and symptoms usually...
Transient tachypnea of the newborn (TTN, TTNB, or "transitory tachypnea of newborn") is a respiratory problem that can be seen in the newborn shortly after delivery.
ICD-9-CM 770.6 converts directly to: 2015/16 ICD-10-CM P22.1 Transient tachypnea of newborn. Source: 2016 ICD-10-CM CMS General Equivalence Mappings.