Post Date December, 03 2023
Urinalysis is a crucial method in the diagnosis of kidney disease, so accurate diagnosis of chronic renal failure also requires urine testing for patients. The following is to introduce some common sense knowledge about urine testing in patients with chronic renal failure, so that everyone can make more clear and accurate judgments about chronic renal failure.
The urine test of a patient includes many aspects and has a significant impact on the diagnostic results. The urine of patients with chronic renal failure is mainly divided into urine volume, urine sediment, urine color, urine specific gravity, urine sodium content, urine osmotic pressure, and urine creatinine and urea nitrogen measurement. Patients generally experience a decrease in urine output (250 ml/(m2d) of oliguria, or 400 ml/24 h of school age children with 50 ml/(m2d) of anuria); The urine color is deep and cloudy, sometimes showing a dark red or sauce oil color; Microscopically, red blood cells, white blood cells, and epithelial cells can be seen in urine; Urine specific gravity is lower than 1.015; Decrease in urine osmotic pressure; Increased urinary sodium (generally 50 mmol/L urinary sodium, 30 mmol/L normal urinary sodium); Symptoms such as abnormal urinary creatinine and urea nitrogen excretion.
After urine examination, patients with chronic renal failure often experience various urinary abnormalities during clinical onset, including: 1. The urine color of patients with chronic renal failure: dark, cloudy, sometimes dark red or greasy, and urinary protein (+)~(++). 2. Reduced urine volume: 250 ml/(m2d) of oliguria, or 400 ml/24 h of school-age children, 50 ml/(m2d) of anuria. 3. Low specific gravity of urine: Due to decreased renal tubular concentration function, the specific gravity of urine is lower than 1.015. 4. Urinary sediment: Microscopically, red blood cells, white blood cells, epithelial cells, and various tube types can be seen. 5. Determination of urinary creatinine and urea nitrogen: In acute cases, the excretion volume decreases, the urinary creatinine excretion is more than lg/d (normal value: lg/d), and the urinary urea nitrogen excretion is 10 g/d (normal value: 15 g/d).
As can be seen from the above, urine examination is very decisive in the diagnosis of chronic renal failure. Therefore, we should not neglect to judge the onset of chronic renal failure through urine examination, which is crucial for timely detection of the condition and also conducive to achieving effective treatment results.
