This image outlines the Grades of Pedal Edema, which describes the severity of swelling in the legs based on the depth and duration of pitting (indentation when pressed). The grades are:
Grade 1: Mild pitting edema; slight indentation that disappears immediately.
Grade 2: Moderate pitting edema; 2–4 mm indentation lasting a few seconds.
Grade 3: Deep pitting edema; 4–6 mm indentation lasting 10–20 seconds.
Grade 4: Very deep pitting edema; leg is swollen with 6–8 mm indentation lasting over 30 seconds.
Each grade reflects the worsening intensity of swelling.