Info

^ Aortic valve closes

Aortic pressure

Left ventricular pressure

Left atrial pressure

Si Ej extensive literature deals with the exact causes of heart sounds. Possible explanations include actual closure of valve leaflets, tensing of related structures, leaflet positions and pressure gradients at the time of atrial and ventricular systole, and the impact of columns of blood. The explanations given here are oversimplified but retain clinical usefulness.

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