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Neonatal respiratory distress is a common emergency condition affecting newborns, characterized by difficulty breathing within the first hours of life. It encompasses various conditions including respiratory distress syndrome (RDS), transient tachypnea of the newborn (TTN), meconium aspiration syndrome, and pneumothorax, requiring prompt recognition and management.
The primary mechanism involves inadequate lung function due to surfactant deficiency (especially in preterm infants), delayed clearance of fetal lung fluid, airway obstruction from meconium or other substances, or structural abnormalities. Immature lungs lack sufficient surfactant to maintain alveolar stability, leading to atelectasis, ventilation-perfusion mismatch, and subsequent hypoxemia and hypercapnia.
Assessment involves evaluating respiratory rate, work of breathing, oxygen saturation, and associated symptoms like grunting, retractions, and cyanosis. Chest X-rays help differentiate between various causes, while arterial blood gases assess the severity of respiratory compromise. Treatment is tailored to the underlying cause and may include oxygen therapy, continuous positive airway pressure (CPAP), mechanical ventilation, or surfactant replacement therapy.
Key imaging focus: RDS (ground glass + air bronchograms), TTN (fluid in fissures), MAS (patchy infiltrates), pneumothorax