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What is Apgar scores were 3, and 6 at 1 and 5 minutes. At 10 Apgar scores were 3, and 6 at 1 and 5 minutes. At 10 minutes child shows features of breathlessness,on CXR-mediastinal shift was there, possible causes – 
a) Bilateral choanal atresiab) Pneumothoraxc) Congenital diaphragmatic herniad) Hyaline membrane disease and explain in detail?
Congenital diaphragmatic hernia and pneumothorax cause respiratory distress with mediastinal shift to contralateral side.
Bilateral choanal atresia and HMD cause respiratory distress, but no mediastinal shift.