Chronic renal failure often leads to edema, which is a common symptom associated with the decreased ability of the kidneys to excrete water, resulting in significant water retention in the body. There are two treatment options for this disease. First, medication can be used, typically diuretics such as loop diuretics. After administration, the patient's urine output increases, which can help reduce edema. Second, for patients who do not respond well to medication, and in cases where edema leads to heart failure or pulmonary edema, dialysis treatment may be considered. Through dialysis ultrafiltration and dehydration, edema can also be alleviated.