Repetition Training - Basic Heart Sounds Aortic Stenosis (Diamond Shaped Systolic Murmur) Lesson Waveform Anatomy play pause Table of Contents 1Third Heart Sound Gallop 2Fourth Heart Sound Gallop 3Aortic Stenosis (Diamond Shaped Systolic Murmur) 4Aortic Regurgitation - Moderate 5Mitral Stenosis (Diastolic Murmur) 6Mitral Regurgitation 7Innocent Murmur Quiz This video is an animation of Aortic Stenosis (Diamond Shaped Systolic Murmur) A#401 (lesson# 3) within course number 3. This is an auscultation example of a diamond shaped systolic murmur associated with aortic stenosis.The first and second heart sounds are normal. The murmur starts shortly after the first heart sound and ends before the second heart sound.The murmur is mid to high pitched.The anatomy tab shows a markedly thickened left ventricle. The aortic valve leaflets are thickened and immobile. The murmur is caused by turbulent flow across the stenotic aortic valve.