Can water in your lungs cause down syndrome in unborn babies

No... Down Syndrome is a chromosome deficiency that happens during conception when a spem and egg fertilize. Sometimes the X and Y Chromosomes don't add up correctly and can (sadly) cause this deficiency. Water in the mother's lungs can cause pneumonia which can potentially harm the fetus due to lack of oxygen. But this cannot cause down Syndrome. Water in the baby's lungs will also not cause Down Syndrome.

Yes they should do if insurance denys claim they have a back up to prove why procedure was medically necessary