Estimation of the severity of aortic valve stenosis by frequency analysis of the murmur.
D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D001024:Aortic Valve Stenosis / Q000503:physiopathology*; D001794:Blood Pressure; D006328:Cardiac Catheterization; D005260:Female; D006326:Heart Auscultation; D006337:Heart Murmurs; D006801:Humans; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography / Q000379:methods*; D013599:Systole; D014732:Vibration