title: Mechanism of changes in the second heart sound in aortic stenosis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000790:Angiocardiography; D001011:Aorta; D001021:Aortic Valve / Q000502:physiology; D001024:Aortic Valve Stenosis / Q000175:diagnosis / Q000503:physiopathology*; D001158:Arteries; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002302:Cardiac Output; D002339:Carotid Arteries; D004562:Electrocardiography; D006321:Heart / Q000502:physiology; D006326:Heart Auscultation; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography; D011664:Pulmonary Valve / Q000502:physiology / Q000503:physiopathology; D011674:Pulse