This is a machine that records heart sounds on paper tracing and it therefore represents the first and second heart sounds as shown in the diagram opposite. It can easily identify heart murmurs and other extraneous sounds from the heart and therefore useful in diagnosis of cardiac diseases.
1 isovolumetric contraction 2 ejection 3 isovolumetric relaxation 4 rapid inflow 5 diastasis 6 atrial systole
School of Medicine
Creator: Oluwole Ogunranti