The cause of high blood urea nitrogen and urea nitrogen under:
Urea nitrogen is ammonia and carbon dioxide as the basic amino acids, manufactured in the liver. Remove the protein from serum components, known as residual nitrogen, more than 50% of healthy urea nitrogen. Making high blood urea nitrogen and creatinine, blood urea nitrogen and creatinine how to treat patients with high? Urea nitrogen excretion from the kidneys into the urine glomerular filtration in this organ function impaired renal excretion if the blood urea nitrogen concentration increases. Therefore, urea nitrogen understand kidney function has become an important indicator of whether the normal. The urea nitrogen is normally from 2.86 to 7.14 mmol / L, the measured value may vary due to changes in the content of the diet.
Renal dysfunction. Urea nitrogen is low, eat very little protein may be associated with pregnancy-related liver failure.
Liver failure. The liver is the major organ metabolic organ, liver failure, resulting in not properly absorb nutrients. Another reason is that the patient is not sufficient protein intake, along with abnormal liver function due to higher consumption. Cause low blood urea nitrogen have multiple, so the patient if there is a low urea nitrogen blood to a normal hospital for examination, usually can not understand the reasons for low blood urea nitrogen renal dysfunction , so excessive panic. Therefore, in order to avoid excessive discharge, it is best to be liver function tests, diagnosed after a good cause, and then prescribe the right medicine, avoid blind treatment, delaying treatment time.
Variety of renal parenchymal lesions, such as glomerulonephritis, interstitial nephritis, acute renal failure and chronic renal occupying lesions can be destructive and elevated blood urea nitrogen in the urine mode space. Renal multiple factors may also cause blood urea nitrogen in urine increased, and external factors such as to rule out kidney BUN21.4mmol / L (60mg / d1) is one indicator of uremia diagnosis. Normal urea nitrogen is 2.5 ~ 5.16MMOl / L (7-15 mg / dl), more vulnerable to the effects of diet, renal blood flow, if the protein degradation factors - infection, intestinal bleeding hyperthyroidism, allowing the urea nitrogen levels.
Under the renal glomerular filtration rate decreased from the normal 1/2 ~ 1/3, urea nitrogen gradually increased, the proportion of urea nitrogen and serum creatinine was 10.1 hematuria due to the generally high proportion of students gastrointestinal bleeding, hemolysis, cardiac dysfunction and improved tissue breakdown (burns, fever, therapy adrenocorticotropic hormone, etc.), pre-renal factors mostly ratio decrease see little protein intake, hepatic insufficiency and severe renal and so on.
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