What are Korotkoff sounds?

Korotkoff sounds are critical in the process of measuring blood pressure. They are a series of sounds that are produced when blood begins to flow through a compressed artery as the pressure in the cuff is gradually released. When the cuff is inflated, it occludes the artery, and no sounds are heard. As the cuff pressure decreases, the blood starts to flow intermittently; this is when the Korotkoff sounds can be heard. These sounds are distinguished through their characteristics and correspond to specific phases of blood flow, from the initial tapping sounds indicative of systolic pressure to the absence of sounds indicating diastolic pressure.

Understanding Korotkoff sounds is essential for accurately determining blood pressure readings, which is a key aspect of cardiovascular health assessments. The other options do not encapsulate the complete essence of Korotkoff sounds, focusing instead on singular aspects of blood pressure measurement or other physiological parameters.