Bronchiolitis causeslower airway obstruction, air trapping, andhypoventilation. On chest radiographs,hypoinflation(low lung volumes) and peribronchial thickening are common. The ABG showsrespiratory acidosis and hypoxemia, consistent withbronchiolar obstructionand hypoinflation.
“In bronchiolitis, hypoinflation and peribronchial thickening are typical CXR findings. ABG shows respiratory acidosis with hypoxemia in severe cases requiring ventilation.”
(Referenced from CCRN Pediatric – Direct Care: Pulmonary, Bronchiolitis and Ventilatory Support)
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