Is morphine in anyway used to help pulmonary edema?

Yes: It is given for chest pain but also decreases venous return which helps reduce pulmonary edema.

Used to be.: Morphine has been used as a relaxant to assist with ventilation and support in pulmonary edema cases. It serves as an anxiolytic is supposed to decrease the work of breathing. More recent studies, though, suggest it may cause more harm than good. Nowadays its use is limited to heart attack cases (not pulmonary edema per se).