The Different Definitions of BPD

The most common one that I think people still use is the mild moderate severe definition. It comes from actually 2001, so it's over 20 years old and it was really just a consensus workshop. Once you have the diagnosis at 36 weeks, that remains in your history at the very least. So we really try to create this sort of pro-growth, pro-long development environment for them that allows them to recover some of their lung function and growth during that time.