A new born child presents with breathing difficulties. On general examination, cyanotic appearance is seen. ABG analysis reveals increased pCO2. Which of the following lipids is associated with respiratory distress syndrome?: (A) Phosphatidylethanolamine, (B) Phosphatidylserine, (C) Dipalmitoyl lecithin, (D) Phosphatidylinositol
Answer is C. Dipalmitoyl lecithin is a very effective surface-active agent and a major constituent of the surfactant preventing adherence, due to surface tension, of the inner surfaces of the lungs. Its absence from the lungs of premature infants causes respiratory distress syndrome.​
Reference: : HARPERS ILLUSTRATED BIOCHEMISTRY30th ed,  Page No:216