The kidneys are the essential organs that fail and necessitate dialysis treatment. Healthy kidneys perform critical life-sustaining functions by constantly filtering waste products, metabolic toxins, and excess fluid from the bloodstream to produce urine. They also play a vital role in maintaining proper electrolyte balances, regulating blood pressure through hormone secretion, and stimulating red blood cell production. When a patient suffers from severe acute kidney injury or chronic end-stage renal disease, kidney function drops to critically low levels, typically below ten to fifteen percent of normal capacity. Without functioning kidneys, toxic substances such as urea and creatinine build up rapidly in the blood, leading to a life-threatening condition known as uremia along with fluid overload in organs like the lungs and heart. Dialysis serves as an artificial, life-saving replacement for failed kidneys by mechanically removing toxins, surplus water, and excess salts to maintain physiological equilibrium.