I did a 48 hour liquid diet and the magnesium crud, yuck!! Within 24 hours post-op, 4 or 5 I.V. bags +, and I had massive amounts of uric acid crystals in my catheter bag. The dehydration can be dependant on your post-op fluid retention factor. I retained a little over 30 lbs. The theory behind it was I had been on somewhat strong doses of lasix for 3 years for anasarca syndrome, and it made my kidneys "dumb", unable to filter fluid properly for a little while. I eventually shed all the fluid weight in about 4 days, but I had to be force-fed I.V. bags because I was constantly showing signs of dehydration, but had low electrolytes anyway. Go figure. So, magnesium citrate as a culprit? I would agree, having had to do it more than once.
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