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hi, i onloy found this out with my second child due to planned c section, a babies lungs are full obviously not in use while inside you, but at 8 months their lungs fill up with fluid to aid them in maturing, if a baby is born at 7 months, the lungs are clear so has better chance of breathing alone than at 8 motnhs when lungs are full, its called wet lung from what i remember. but by the time they hit the 9 month and ready mark the lungs empty again ready for delivery and breathing oxygen when born. hope this helps x

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16y ago

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