_:vb50954387 . _:vb50954387 "url:https://www.ncbi.nlm.nih.gov/pubmed/26731888"^^ . _:vb50954387 "url:https://www.ncbi.nlm.nih.gov/pubmed/29377232"^^ . _:vb50954387 . _:vb50954387 . _:vb50954387 . _:vb50954387 "An aortic valve stenosis that is characterized by a narrowing of the section of the heart under the aortic valve resulting in left ventricular outflow obstruction."^^ . _:vb50954387 .