What characterizes Transient Tachypnea of the Newborn (TTN)?

• A. Due to inadequate fetal oxygenation
• B. Caused by excess lung fluid
• C. Results from maternal diabetes
• D. Develops in the first month of life

Answer: (B)

Transient Tachypnea of the Newborn (TTN) is characterized primarily by the presence of excess lung fluid. This condition often occurs due to retained fetal lung fluid that did not clear adequately during the labor and delivery process. The newborns with TTN often exhibit rapid breathing and may commonly be born via cesarean section without labor, as the thoracic squeeze associated with vaginal delivery helps to expel the fluid from the lungs.

In contrast, inadequate fetal oxygenation would typically lead to more severe respiratory conditions and is not a direct cause of TTN. Maternal diabetes can contribute to various neonatal complications, but it is not a primary factor in the development of TTN. Furthermore, TTN usually presents shortly after birth, not developed over the course of the first month of life. Thus, the characteristic cause of excess lung fluid aligns with the pathophysiology of TTN, making it the correct choice.