This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'Which of the following will our the diagnosis of respiratory distress syndrome (RDS) in new born? \nSelect and explain. \nA. Receipt of antenatal steroids, B. Air bronchogram in chest x-ray, C. Manifests after 6 hours, D. Occurs after term gestation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Respiratory distress syndrome (RDS) or Hyaline membrane disease (HMD): It is the commonest cause of respiratory distress in a preterm neonate often less than 34 weeks of gestation. Other risk factors for its development includes asphyxia, acidosis, maternal diabetes and caesarean section. Respiratory distress usually manifest within first 6 hours of life. Administration of antenatal coicosteroids reduces the incidence of RDS, Necrotising enterocolitis and Intraventricular hemorrhage. Chest X-ray features of RDS: Bilateral diffuse reticulogranular opacities in the pulmonary parenchyma, pronounced hypoaeration, ground glass opacity, low lung volume, "prominent air bronchograms" (aerated bronchioles superim posed on a background of collapsed alveoli) or whiteout lung.', 'role': 'assistant'}]