Final answer:
Korotkoff sounds are evaluated during blood pressure measurement to determine systolic and diastolic pressures, which are essential for diagnosing issues like hypertension.
Step-by-step explanation:
Korotkoff sounds are evaluated when measuring a patient's blood pressure using a sphygmomanometer and a stethoscope. These sounds, which represent turbulent blood flow through the vessels, are key indicators of systolic and diastolic pressure. During the measurement process, the clinician places an inflatable cuff around the patient's arm and raises the pressure to temporarily halt blood flow. As the cuff's pressure is gradually released, the first Korotkoff sound indicates the systolic pressure. The point at which the last Korotkoff sound is no longer heard marks the diastolic pressure. This method is critical for diagnosing and managing conditions such as hypertension.