Which assessment technique is used to evaluate swelling in the lower extremities?

Measuring the circumference of the legs is a key assessment technique for evaluating swelling in the lower extremities. This method provides a quantitative measure of the size of the limbs, allowing for comparison over time or between the two legs. An increase in circumference can indicate edema or fluid retention, and precise measurements can help track the severity of swelling and response to treatment.

While palpation for tenderness is essential in assessing pain and discomfort, it does not directly measure the extent of swelling. Observation for color changes can indicate issues such as poor circulation or inflammation, but it doesn't provide a direct measurement of swelling. Auscultation of heart sounds is unrelated to assessing lower extremity swelling and is more focused on cardiovascular health. Thus, measuring the circumference is the most effective and specific technique for evaluating swelling in this context.