Ok for 8monthold use nasonex (mometasone) steroid nasel spray for slightly enlarged adenoids.history trach, bronch, lary malacia.operated coarc aorta bicuspid valve?

No: You should be using saline rinse via bulb syringe, and must see your doctor for any more aggressive therapy.

No simple answer: A simple answer would be to say that Nasonex (mometasone) is a pretty benign drug in most instances - and that would be true. However, you describe a very, very complex case with complex respiratory issues. I would only use this drug if the physicians managing your child say ok. It should have no effect on the heart problems.