Concerning the differential diagnosis of a pulmonary edema pattern and normal heart size: What are four conditions associated with improvement in 24 to 72 hours?

Concerning the differential diagnosis of a pulmonary edema pattern and normal heart size: What are four conditions associated with improvement in 24 to 72 hours?

1. TTN
2. Aspiration of amniotic fluid
3. Intracranial hemorrhage
4. Hyperviscosity, hypervolemia