Transient tachypnea of the newborn

Summary of Transient tachypnea of the newborn
Transient tachypnea of the newborn is a respiratory problem that can be seen in the newborn shortly after delivery. It is the most common cause of respiratory distress in term neonates. It is likely due to retained lung fluid. It is most often seen in 35+ week gestation babies who are delivered by Caesarean section. Usually, this condition resolves over 24-48 hours.

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Pathology

Respiratory system

Upper respiratory tract disorders
Lower respiratory tract disorders
Pleura and pleural space disorders
Pulmonary vascular disorders
Apnea and hypoventilation
Respiratory system pathology review

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Transient tachypnea of the newborn

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Transient tachypnea of the newborn

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Chest X-ray showing correlating to fluid in the lymphatic system is characteristic of transient tachypnea of the newborn.

Questions

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USMLE® Step 2 style questions USMLE

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A one-hour-old male infant delivered via Cesarean section at term has nasal flaring, tachypnea, and intercostal retractions. Chest X-ray shows perihilar interstitial markings. The patient is started on intravenous (IV) fluids and supplemental oxygen. Over the next 48 hours, the oxygen is discontinued and the patient’s oxygen is 99% at room air, respiratory rate is 45/min, and chest X-ray shows no abnormalities. Which is the most likely diagnosis in this patient?