I work in a Level III and all of our babies even 24 wk are seen for OT/PT consults. Especially just for positioning, and all of our RN's take a developmental care class. Also I work at a Children's Hospital that doesn't do deliveries, so we have a lot of babies that need surgery and ECMO. I can send the developmental stuff if needed.
We change ours once a month, our infection problems are more central line in nature. We check residuals before every feed unless otherwise indicated. Also pH testing every one.
not only do we have a policy, but a demonstration video. We change central line dressings only when they are soiled, or 7 days. I can send if neccessary.