Urea is the President and the final output of the metabolism of proteins in mammals, consisting urea in the liver and then passesinto the blood to the kidneys, where he graduated with the urine.
And interference in the formation of urea from ammonia (NH3), which consists of toxic demolition of amino acids.
Although the level of urea in the blood is an indication of non-sensitive function of renal However,
the ease of measurement made of the Common tests and not the sensitivity of this test is that it must lose more than 50% of the function of glomerular renal even affected the level of urea in the blood,moreover, there are many reasons non-renal origin can cause high urea in the blood, and the level of urea in the blood is affected by proteins in the food and the amount of Rashihglomerular kidney.
The level of urea in the blood ranges between 20-40 mg / 100 ml blood (3.5 - 7 mmol / L)
Natroyjana level in the blood urea Blood Urea Nitrogen (BUN)ranged between 8-25 mg / 100 ml blood (0.9 - 8.9 mmol / L)
Level of concentration of urea in the urine ranged between 20-40mg / 100 ml blood, and in infants between 5-15 mg / 100 mlblood, and the children of 5-20 mg / 100 ml blood.
Reasons for the high level of urea in the blood:
Increase the level of urea in the blood in the following cases:
Inflammation of acute and chronic renal
Renal failure
Obstructive urinary
Gastro-intestinal bleeding
Trauma and fall of the gland above the kidney
Cases of dehydration, so as to have a large amount of fluid that occurs in such as persistent vomiting and severe diarrhea
Mercury poisoning and certain other heavy metal salts
The reasons for the low level of urea in the blood:
Decreasing the level of urea in the blood in the following cases:
Liver disease developed, and in this case consisting of ammoniaand fails the liver to convert to Paulina Due to the severity of the disease, and multiply risk in the presence of high concentrations of urea, because the ammonia gas is highly toxic, which is spreading in the whole body and impact of severe be on the brain, leading to complete paralysis in the case of the brain'scerebral palsy resulting from increasing the proportion ofammonia in the patient enters a coma Hepatic Coma intermittent,but with the increase in the proportion of ammonia in the blood may lead to the patient in a coma may lead to death
Increase the rate of dialysis Hemodialysis industrial and this affects the rate of urea in the blood, where there are few to be upto less than normal.
Cachexia wasting diseases such as tuberculosis and malnutritionMalnutrition and famine Starvation
Reason for the increase Tzakiz urea in the urine:
Increasing concentration of urea in the urine when you eat a diet rich in protein, and in cases associated with increased protein catabolism in the body such as fever, diabetes, untreatedhyperthyroidism and thyroid gland.
Concentration causes a decrease of the proportion of urea in the urine:
Less than the proportion of urea in the urine when you eat a poordiet of proteins, and in building proteins such as pregnancy and lactation, and in cases of liver failure and kidney failure.
التسميات
Analyses