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by (680 points)
the subject is a high school student, feeling that the teacher has not explained clearly

6 Answers

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by (450 points)
because the blood sugar is too high and exceeds the renal glucose threshold (8.89~10.0mmol/L), the glucose filtered through the glomerulus can not be completely reabsorbed by the renal tubule. If there is more glucose in the urine, there will be more water, resulting in osmotic diuresis.
the higher the blood glucose, the more urine glucose excretion, and even the 24-hour urine volume can reach 5000~10000ml. Some children who don't wet the bed should pay attention to it when they start wetting the bed, because some type 1 diabetes starts with bed wetting.

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by (550 points)
excerpted from the Internet.
because the blood glucose of diabetic patients exceeds the renal glucose threshold, there is glycosuria, and it can also be accompanied by renal tubular injury, so that the ability to reabsorb glucose in the original urine decreases and glycosuria occurs. Due to glycosuria, the osmotic pressure of urine increases and the water absorbed by renal tubules decreases, and the urine volume often increases.
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by (240 points)
hyperglycemia is an abnormal symptom of blood glucose caused by abnormal glucose metabolism. In essence, it is a phenomenon of abnormal and high glucose content in blood caused by the fact that the blood glucose regulation mechanism of the human body can not automatically regulate the metabolism of carbohydrates in the body. This phenomenon of high glucose content is generally characterized by"present"and"temporary", that is, the content of glucose in the blood changes dynamically with the glucose metabolism of about 50 trillion cells in the human body.
only when the overall metabolism of human body is balanced and normal, with the establishment of normal blood glucose regulation mechanism, the content of sugar in blood can be automatically controlled in a reasonable range.
it can be seen that when the phenomenon of hyperglycemia first appeared, it was overdigested by the imbalance of gastrointestinal microflora caused by the preference of high glucose diet, which led to the result of excessive absorption of sugar in human body.
excess glucose is converted into fatty acids by biochemical processing in the liver, resulting in abnormal blood lipids, which will lead to the deterioration of blood quality in blood vessels and the appearance of blood viscosity and turbidity, and then lead to microcirculation disorders. At this time, it will lead to the front artery blood glucose and other substances can not be effectively transported to the microcirculation site where the tissue cells are located for effective exchange, so that part of the glucose in the blood can not be used by the tissue cells in time, and then aggravate the occurrence of the vicious circle of glucose metabolism disorder, resulting in the blood glucose content of the human body in a high state for a long time.
the blood glucose metabolism of human body includes two pathways:"the source of blood glucose and the way of going". The fact that some tissue cells do not get the supply of sugar and lead to the inexhaustible consumption of glucose in the blood will break the dynamic balance mechanism of"the source and path of blood glucose"in the human body, and lead to the formation and development of hyperglycemia. It shows that the essence of hyperglycemia is the result of abnormal glucose metabolism.
after the disturbance of blood supply to human arterial capillaries, that is, the disturbance of microcirculation causes cells not to get sugar supply, and a large number of cells do not get sugar supply. The result of the regulation mechanism of the human body itself is through urine excretion, at this time will produce"glycosuria phenomenon".
it is worth noting that the occurrence of"glycosuria"does not mean that diabetes has occurred in the human body at this time, that is, the presence of"glycosuria"does not mean that there is diabetes. Accordingly, hyperglycemia does not mean diabetes. Diabetes is closely related to microvascular lesions in human body.
so diabetes is a collection of complications in various organs of the body in the case of abnormal glucose metabolism, and it is a group of metabolic chronic diseases, not a single metabolic chronic disease. There are hundreds of complications involving varying degrees of severity.
Diabetes is a group of comprehensive and complex metabolic chronic diseases characterized by complications of human organs. If you want to know how your diabetes is formed and how to regulate it, you need to understand the evolution of diabetes. On the theme of"how diabetes evolves", we must understand how high glucose content in blood is formed, start with the front-end causes of high blood glucose, synchronously solve source problems, formed complications, and so on. Diabetes can be really solved.
only through the phenomenon of hyperglycemia to see the nature of diabetes, all kinds of metabolic chronic disease, the dilemma of the world problem can be solved. We are welcome to discuss it together.
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by (220 points)
polyuria is because glucose in the blood exceeds the renal threshold and glucose is excreted through the urine, because too much sugar cannot be absorbed and used in the blood, the osmotic pressure of the blood increases, resulting in increased glomerular filtration, and a large amount of water in the blood is filtered out, resulting in insufficient body fluids, resulting in thirst. About 2/3 of diabetics have polyuria, because polyuria and polythirst are causality, polythirst is the cause of polyuria, polyuria is the result of polythirst.
0 votes
by (740 points)
the reason is that the high concentration of blood sugar stimulates the nerve center of the hypothalamus, telling the body that it needs to replenish water and increase the amount of urine to discharge too much sugar. And urine excretion, the body loses too much water, just have to drink more water, this is a kind of self-protection measure of the body. People with diabetes drink more, Polyuria can be represented by the following causal chain:
After drinking water, the plasma osmotic pressure can be reduced or returned to normal. Blood sugar drops and the body is no longer thirsty. Therefore, diabetes in a timely manner more than one less should also drink the right amount of water, should not be afraid of polyuria and limit the amount of drinking water. If you limit drinking water, it will aggravate the hyperosmotic state, has been in a high-sugar state, it is quite disadvantageous to the control of the disease.
0 votes
by (560 points)
typical symptoms of diabetes, three more and one less: drink more, eat more, and urinate more.
our blood is a solute that dissolves all kinds of common red blood cells, white blood cells and many other vital signs. Vascular endothelium also has many receptors that receive signals from the blood, such as stress and hormones. If the concentration of blood sugar is too high, it will lead to increased intravascular pressure, which will stimulate the corresponding receptors and make the brain feel hungry and thirsty. The act of prompting the patient to drink more.
so in fact, polyuria is caused by drinking more, naturally more urine.
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