What is the cause of azotemia without renal failure?

  Renal failure is a pathological state of partial or total loss of kidney function caused by the late development of various chronic kidney diseases. Acute renal failure can be divided into acute renal failure and chronic renal failure. Acute renal failure progresses rapidly and is usually caused by insufficient blood supply to the kidneys (such as trauma or burns), impaired function of the kidneys due to some kind of obstruction, or injury from toxic substances that cause acute renal failure. Chronic kidney failure, on the other hand, is mainly caused by long-term kidney lesions, and as time and the disease progress, the function of the kidneys gradually declines, causing the onset of kidney failure.  Dialysis is the selective elimination of certain substances from the blood through filtration. In other words, the toxic waste, water and salt that accumulate in the body of the patient after kidney failure are removed through artificial means, so that the patient’s physical condition is restored to a healthy state. There are two forms of dialysis currently used: hemodialysis and peritoneal dialysis. Hemodialysis is a special machine that replaces the function of the kidneys. Peritoneal dialysis uses the body’s peritoneum as a filter to remove toxins from the body.