Which infant delivery method is most associated with Transient Tachypnea of the Newborn (TTN)?

• A. Forceps delivery
• B. Cesarean delivery
• C. Vaginal delivery
• D. Home birth

Answer: (B)

Transient Tachypnea of the Newborn (TTN) is a respiratory condition that occurs in infants characterized by rapid breathing shortly after birth. It is most commonly associated with cesarean delivery, particularly when the delivery occurs without preceding labor.

In a vaginal delivery, the process of labor helps to expel fluid from the lungs of the newborn through the compression that occurs during the birth canal passage. This clearing of pulmonary fluid is less effective in infants delivered by cesarean section, especially if the surgery is not preceded by labor. As a result, these infants may retain more lung fluid, which can lead to transient tachypnea as the body works to reabsorb this fluid.

The other methods of delivery, such as forceps or home births, do not have the same strong association with TTN as cesarean delivery does. While TTN can occur in any delivery method, its prevalence is significantly increased following a cesarean delivery that has not been preceded by labor. Therefore, understanding the implications of the delivery method is essential in recognizing and potentially managing the risk of TTN in newborns.