McHale,
I'm very sorry to hear about your mom. I'm sure it is scary as all get-out, as well as frustrating not to be able to fix her right up. Other than to agree that the trauma and diuretic probably did contribute, I don't have any advice for you, but if you were to repost this in the current forum (#9), others will see it and contribute their knowledge and support.
My thoughts and prayers are with you and your mother,
lisa
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So much of medicine is looking solely down the wrong end of the gun barrel, and that is really a pity for all of us---Shannon