Concerning the differential diagnosis of a pulmonary edema pattern and cardiomegaly, what are three conditions associated with no improvement in 24 to 72 hours?

Concerning the differential diagnosis of a pulmonary edema pattern and cardiomegaly, what are three conditions associated with no improvement in 24 to 72 hours?

1. Hypoplastic left heart (heart may be normal or enlarged)
2. Severe coarctation (often associated with a left-to-right shunt)
3. Myocardiopathy