What are the symptoms of renal failure has

What are the symptoms of renal failure has
① oliguria. Decreased urine output, resulting in the occurrence of hyperkalemia, water intoxication (severe edema, elevated blood pressure, pulmonary edema or cerebral edema), metabolic acidosis, and acute uremia symptoms. Hyperkalemia and water intoxication as the main cause of death.
② polyuria. After regeneration of tubular epithelial cells gradually increased urine output, so that potassium, sodium decreased, sustained multiple urine of patients may die from dehydration and electrolyte imbalance.
③ recovery. After much reduced urine of normal urine, blood Bun, creatinine (Scr) and electrolyte levels were normal, but normal renal tubular function and structure will take 3 to 6 months. Failed to restore those chronic renal failure. Although the urine of non-oliguric lot, but blood Bun, Scr daily rise and symptoms of poisoning, kidney damage due to light, so the prognosis is good.