Medical Definition of VIP
vasoactive intestinal peptide; vasoactive intestinal polypeptide <Although hypokalemia and acidosis are classically associated with secretion of vasoactive intestinal polypeptide (VIP) by a neuroendocrine tumor, electrolyte abnormalities occur in other forms of chronic diarrhea.—Roger Kapoor et al., The New England Journal of Medicine, 5 Feb. 2009>
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