For assessing pitting edema, what should be measured?

Measuring the depth of compression on a bony prominence is the correct approach for assessing pitting edema. This method involves applying pressure to an area where edema is present, typically over a bony landmark like the shin or ankle. After removing the pressure, the indentation left in the skin indicates the severity of the edema. The depth of this indentation reflects the amount of interstitial fluid volume that has accumulated, which is critical for determining the extent of the edema.

While the circumference of the waist is a useful measurement for assessing overall body swelling or obesity, it does not provide specific information about localized pitting edema. The temperature of the skin may indicate other underlying conditions, such as inflammation or infection, but does not directly measure edema itself. The duration of swelling may offer insights into the edema's chronicity or the effectiveness of treatment, but it does not provide a quantitative measure of pitting edema. Therefore, focusing on the depth of compression offers the most accurate assessment of pitting edema.