How to identify the cause of acute renal failure classification

Correctly distinguish the cause of acute renal failure classification, the choice of treatment is important. Specific points: ① According to history, detailed analysis of specific content as mentioned above. ② oliguria period in accordance with changes in the urine to be identified, play an important role. ③ kidney examination: Kidney ago of a parabola-shaped, but may appear after the infusion excretion; kidney of a low-level graphics, transfusion after no change; kidney after the secretion of the continuing increase of 15 minutes did not drop, does not change after rehydration . ④ should carefully distinguish between the former acute renal ischemic acute renal failure and renal necrosis, which often causes similar, there are insufficient blood volume, sometimes the opposite treatment programmes, such as the former should rehydration to expansion, while the latter should be restricted to water, sodium. In addition to these specific methods, the following three tests: Rehydration test: if in one hour, added to 1,000 milliliters of liquid, urine output increased to 40 ml / hour for the kidney before, if the blood volume has been corrected, still no urine output increase compared with tubular necrosis, should immediately stop Infusion; Mannitol test: if rehydration test not sure, in 5 to 15 minutes in the importation of 62.5 ~ 125 ml mannitol, an average of two hours in the urine of 40 milliliters per hour for the kidney before, or for tubular necrosis Should be suspended; Furosemide test: correct blood volume, not increase the amount of urine, can be 200 milligrams of intravenous furosemide, within two hours before the kidney to increase the amount of urine, or may not increase at five percent increase in 100 ml of glucose 500 Mg and 10 mg of furosemide dopamine, the loser in the end one hour, an increase of renal urine before, or for tubular necrosis, should be suspended. More than three tests should be used carefully, the former should prevent water poisoning, excessive expansion, from left heart failure, the latter two will speed up the tubular necrosis, once found no reaction, should be immediately suspended. More than three kinds of ways to prevent kidney or before the development of acute renal failure for ischemic tubular necrosis of the way, that distinction between the two, is of great significance. Relations to the success of the rescue.