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  • Title: Aortic stenosis, idiopathic gastrointestinal bleeding, and angiodysplasia: is there an association? A methodologic critique of the literature.
    Author: Imperiale TF, Ransohoff DF.
    Journal: Gastroenterology; 1988 Dec; 95(6):1670-6. PubMed ID: 3053316.
    Abstract:
    To assess the reported association between colonic angiodysplasia and aortic stenosis, we performed a quantitative and methodologic analysis of the literature. In four controlled studies that support an association between aortic stenosis and idiopathic gastrointestinal bleeding there are major methodologic deficiencies including the following: nonblinded data collection, noncomparable diagnostic examination, nonblinded ascertainment of exposure, and noncomparable demographic susceptibility. None of the studies directly assesses angiodysplasia. Additional case reports about aortic valve replacement used to treat bleeding from angiodysplasia are limited in number and in duration of follow-up. We conclude that the existing literature does not demonstrate an association between aortic stenosis and angiodysplasia. Further controlled evaluation of this topic would be useful.
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