Edema. The only accurate way to measuse edema is by using a tape measure. Swelling in the legs can be measured in this way however, facial swelling could not. Daily body weight is often used as a crude way to monitor edema that cannot be measured accurately.
Edema. Typically based on the depression of the thumb into the soft tissue of the shin just above the ankle, although it is occasionally measured on the top of the foot. It is termed "pitting" or "non-pitting" and typically on a 0-4+ scale.