Reversible azotemia

Introduction Blood urinary toxic, creatinine, uric acid and other non-protein nitrogen (NPN) levels are significantly elevated, called azotemia. Reducing the amount of NPN by drug treatment is what we call reversibility.

Cause

The amount of non-protein nitrogen (NPN) in the blood increased significantly.

Insufficient renal perfusion secondary to the following conditions can lead to this disease: 1 heart beat volume reduction 2 blood loss 3 low blood pressure 4 dehydration syndrome 5 post-operative period 6 late stage tumor disease 7ADH secretion syndrome 8 with vasoconstrictor. Common causes of prerenal renal failure include vomiting, diarrhea, dehydration, major bleeding, burns, etc., and can also be seen in severe edema and ascites (relative blood volume deficiency).

an examination

Related inspection

Filtered sodium excretion fraction FENa blood routine

The blood urea nitrogen and creatinine are above the normal range (normal blood NNP is 25~35mg%, of which urea nitrogen is 10-15mg%). This period is called azotemia period, or pre-uremic period. When the disease is suspected, it is necessary to check blood electrolytes, blood gas analysis, liver and kidney function, B-ultrasound, blood routine, and urine routine as early as possible, and perform corresponding examination according to clinical manifestations.

Differential diagnosis

Various kidney diseases are prolonged and unhealed, and renal function damage may occur in the late stage, so that nitrogen leakage in the blood is blocked, and sputum accumulates in the blood, which is the result of renal failure. However, normal people eat high-protein foods in a short period of time, such as Chinese New Year holidays or too many banquets. Although the kidney function is normal, but the excessive nitrogen can not be quickly discharged in a short time, it will appear once. Sexual azotemia. In addition, patients with nephrotic syndrome edema and oliguria may also have transient azotemia. When diuretics are applied, the amount of urine increases, and blood urea nitrogen will also fall to normal. This cannot be regarded as renal failure. There is no need for patients to carry heavy burdens of thought. A young male patient with nephrotic syndrome, blood urea nitrogen 14.2 mmol / liter (42 mg%), a hospital was diagnosed as renal insufficiency. However, we observed that the patient had a small amount of urine, about 600 ml per day, and moderate edema.

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