title: The syndrome associated with midsystolic click and late systolic murmur.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000680:Amyl Nitrite; D006328:Cardiac Catheterization; D005117:Cardiac Complexes, Premature / Q000175:diagnosis*; D002648:Child; D002932:Cineangiography; D004562:Electrocardiography; D005260:Female; D006326:Heart Auscultation; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000175:diagnosis*; D010701:Phonocardiography
chemical_list: D000680:Amyl Nitrite