Hi girls,
As Ryn said, yes, there is a little hole in the heart,,,,well, it is actually a little tube that kinda bypasses the lungs etc.. When bubs has its first breath, the valve shuts and closes. This is called the Patent ductus arteriosis. I know all about this as when my first DS was born at 28 weeks, his didnt shut properly. At 15 months old, he was only an average 6 month old baby's weight, and hadnt put on an ounce in about 4 months.
I had to go to the prince charles hospital in Brissie, and he had closed heart surgery on it 3 days after losing my DD. Now he is a lean, tall 10 year old full of energy.