LAUSR

1. Daniel Hinds, MD* 2. Matthew Cooper, MD* 3. Ameet Daftary, MD* 1. *Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN A 4-month-old boy presents to the hospital with worsening tachypnea. He was born at 34 weeks' gestation via cesarean delivery to a gravida 1 mother owing to preterm labor and cephalopelvic disproportion. After birth, he was admitted to the NICU for prematurity, feeding difficulty, and hypoxemia. He advanced to full feeds by 7 days after birth; however, by day 23 after birth, he had developed tachypnea, and auscultation of his lungs demonstrated slightly diminished breath sounds in the right upper lobe (RUL) with crackles in the left upper lobe (LUL). A chest radiograph showed RUL atelectasis with mild LUL expansion (Fig 1). Because he did not improve with chest physical therapy, a bronchoscopy with bronchoalveolar lavage was performed on day 39 after birth and did not show any airway …