In spite of the standard prep for renal artery duplex exams, our patients
have been extremely gassy.  We work in an out patient facility, and depend
on the patients to follow through with the prep.  We ask them to eat only
lean meat, boiled or broiled the night prior to the study; we ask the
eliminate the consumption of fruit, vegetables (especially onions,broccoli,
cauliflower, cabbage) and dairy products; we suggest boiled noodles or
potatoes without butter, sour cream, or heavy sauces to accompany their
meat.  They are instructed to take several dosages of over-the-counter anti-
gas product with lots of water. In spite of these instructions, they are
still producing amounts of intestinal gas that sometimes inhibits complete
interrogation of the abdominal vasculature.  Actually, sometimes I think
their large intestine is in need of evaculation, especially when imaging is
undoable in the upper abdomen, where the transverse colon lies, and no
peristalsis is seen in that region. Many of them have a large abdominal
girth, and that might be part of the problem.  Has anyone out there
tinkered with their prep to perfection, and willing to share your findings.
Thank you,
Elaine

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