What are the symptoms of kidney failure?

Oliguria period: is it the most critical phase, internal environment serious disorder. Patients can appear less urine (< 400 ml/day) or no urine (< 100 ml/day), low density urine (1.010 ~ 1.020), urinary sodium high, urinetoplasma ratio, albuminuria, tube type. Urine Patients with severe water poisoning, can appear high potassium hematic disease (often for this period the death), metabolic acidosis (can promote high potassium disease happen) and nitrogen qualitative hematic disease (progressive increase can appear uremia), endanger patient life. This period lasts a few days to several weeks for the longer, the worse prognosis.

Many urine: less urine period urine output increased gradually after, when the daily urine is more than 500 ml, namely into much of urine. Since then, urine output increased exponentially on a daily basis, and the highest daily urine output 3000-6000 ml, even can be as high as 10000 ml above. In the initial phase of urine, urine output is increased, but the kidney clearance is still low, the accumulation of metabolic products still exist. About four to five days later, serum urea nitrogen, muscle liver with urine output increase and step down, uremia with symptoms improved. Potassium, sodium and chloride electrolytes such as from urine discharge can cause of electrolytes disturbance or dehydration, should be less urine issue of the peak message stage may change for hypokalemia. This period lasted 1 to 2 weeks.

Recovery: urine output gradually returned to normal, 3-12 months kidney function gradually recovered, most patients with renal function can be returned to normal, only a few patients to chronic renal failure.