FIGURE 5.

Ultrasonic manifestation of TTN: pleural effusion. The infant above had a GA of 39 wk and was delivered by cesarean section; the infant had a birth weight of 3980 g. The infant was admitted to the hospital after suffering from dyspnea for 5 h. Lung ultrasonography showed the disappearance of the pleural lines in both the lungs, A-lines, and interstitial syndrome in the left lung field and pleural effusion in the right lung. This case also demonstrated that the degree of the injury in each of the lungs in a child with TTN could be different. GA = gestational age, TTN = transient tachypnea of the newborn.