What type of murmur is produced from aortic stenosis?

Aortic stenosis typically produces a high-pitched systolic ejection murmur. This occurs due to turbulent blood flow across the narrowed aortic valve during ventricular systole. The high-pitched quality of the murmur is influenced by the velocity of blood flow, which increases as it passes through the stenosed area. Additionally, the timing of the murmur corresponds to the ejection phase of the heart cycle, where the left ventricle contracts and pushes blood through the narrowed aortic valve.

The characteristics of the murmur, including its high pitch, can also be attributed to the fact that higher frequency sounds are generally produced by faster-moving blood. It is important to distinguish this type of murmur from other types that may be low-pitched or continuous in nature, as they usually indicate different cardiac or vascular issues. In clinical practice, accurately identifying the characteristics of murmurs, such as pitch, is crucial for proper assessment and diagnosis of underlying conditions.