PHYL 3520 Lecture Notes - Lecture 16: Aortic Stenosis, Mitral Valve Stenosis, Coronary Artery Disease
9 Mar 2020
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Phyl 3520 lecture 16 february 26, 2020 cv vii: valve malfunction, hypertension ii. Hemodynamics and heart murmurs: match phonocardiogram with valve malfunction. Heart murmurs has to do with blood moving through the valve in the wrong way through stenosis or regurgitation. A in the diagram is under normal condition. B, c, d, e are all related to valvular problem either in the mitral or aortic valve and are either stenosis or regurgitation. Mitral valve regurgitation affects systole ejection, isovolumetric contraction and relaxation. Aortic valve regurgitation affects diastole filling, isovolumetric contraction and relaxation. B shows a crescendo-decrescendo in systole, which is indicative of aortic valve stenosis pressure changes. As the lv pressure starts to build, there is increased movement of blood through the valve, which increases the sounds and turbulence. As the lv pressure starts to drop, the turbulence also drops. C shows mitral regurgitation, going throughout systole with a smaller signal.
