Staging of renal insufficiency

Are you staging of renal dysfunction have a correct understanding of it? Disease have a professional can help us better understand the treatment and prevention of disease, we are very necessary to understand the relevant knowledge, I hope I shall be able to help your presentation .
What is renal insufficiency? Renal insufficiency is a variety of causes glomerular damage, body water and electrolyte disorders, acid-base imbalance and other aspects of a comprehensive set of Panic syndrome, a very big harm to people.
Renal insufficiency can be classified into four phases:
1, renal insufficiency stage (Ⅰ period): decompensated renal functional reserve
Compensatory renal reserve capacity is very large, although sometimes kidney function has been compromised, but still be able to protect the water and electrolyte balance and normal metabolism to meet their basic needs, there is no obvious symptoms.
2 stage renal insufficiency (Ⅱ stage): renal insufficiency of
This has been part of glomerular damage, kidney metabolic function has some obstacles, creatinine, urea nitrogen may be high, the patient may have fatigue, anemia, loss of appetite and other symptoms, is often overlooked.
3, renal insufficiency stage (Ⅲ period): renal failure
Renal damage has been very severe, then do not be able to maintain normal metabolism, in vivo environment is unstable, patients have significant symptoms, such as fatigue, weakness, anemia, nocturia, increased serum creatinine and blood urea nitrogen increased, often acidosis .
4, renal insufficiency installments (Ⅳ stage): end-stage renal failure or uremia
This period of glomerular damage has been more than 90%, the symptoms are very serious, such as oliguria, nausea, vomiting, high blood pressure, skin itching and other very obvious.