Here is nice summary post by FOAMed guru Anand Swaminathan with evidence-based discussion of the role (or lack thereof) for diuretics in acute pulmonary edema. Trust me it works. See also the first Emcrit podcast on the topic.

Bottom line: minimal role for diuretics in the pulmonary edema patient in extremis. This is not the mildly fluid overloaded patient with normal respiratory status, they can use a little diuresis once BUN/Cr are determined.