Healthy people don't have to do anything, just keep your mouth shut and take your legs! Blood purification is for people with diseases.
Why should hemodialysis do arteriovenous fistula?
Hemodialysis refers to the use of blood purification device (artificial kidney) to remove all kinds of toxins and excess water in the blood of uremia patients, and at the same time supplement all kinds of beneficial substances to achieve the purpose of purifying blood. Hemodialysis is one of the commonly used methods to treat uremia, which can effectively maintain the life of uremia patients. Uremic patients must establish vascular access before receiving hemodialysis treatment. The so-called vascular access refers to the way to draw blood from the body, enter the extracorporeal circulation device and return to the body. It is the lifeline of patients who rely on hemodialysis to survive. Establishing and maintaining reliable vascular access is a prerequisite for hemodialysis treatment. Vascular access is generally divided into temporary vascular access and permanent vascular access. During dialysis, the blood flow of cardiopulmonary bypass (CPB) reaches 250 ml per minute, while the blood flow of arm vein is usually only tens of ml, which is far from meeting the needs of dialysis, and the vein wall is thin and can not stand repeated puncture by dialysis needles. Therefore, the temporary vascular access needs to puncture the dialysis catheter into the great vein or artery of the body to achieve sufficient blood flow and meet the needs of hemodialysis. The right internal jugular vein, femoral vein and subclavian vein are generally used for deep vein puncture, and the right internal jugular vein is the most commonly used. It is characterized by simple operation and can be used after puncture, but the catheter maintenance time is short, usually only a few weeks, which can not meet the needs of long-term maintenance hemodialysis patients. The radial artery and cephalic vein of forearm wrist are often used for autologous arteriovenous anastomosis (i.e. internal fistula plasty) to obtain permanent vascular access. That is to say, the radial artery of the patient's wrist is connected with the cephalic vein, which makes the arterial blood directly impact the vein wall for a long time, leading to the increase of local venous blood pressure and the thickening and expansion of the vein wall. After several months, the cephalic vein can not only get enough blood flow, but also puncture the vein wall repeatedly to meet the needs of long-term hemodialysis. Arteriovenous fistula (AVF) solves the problem of vascular access in uremia patients with long-term dialysis, and it is the safest, most economical and most lasting vascular access at present. However, in some patients, such as the elderly, diabetes, hypertension, coronary heart disease or arteriosclerosis, especially those with vascular stenosis caused by venous embolism and repeated puncture, arteriovenous fistula plasty is difficult and the surgical effect is poor. As a vascular access, vein can only be used after its structure and function are mature. The mature time of internal fistula should only be human. Autologous arteriovenous fistula is immature until its inner diameter is large enough to ensure successful puncture and provide sufficient blood flow. This process takes at least 1 month, so it is best to use it 3-4 months after internal fistula plasty. For patients with poor vascular conditions, the maturity of internal fistula even takes up to half a year. Therefore, for patients who choose future hemodialysis treatment in advance, autologous arteriovenous fistula surgery should be performed in advance. For patients who may need internal fistula surgery, attention should be paid to protecting limb veins. If the operation is performed one year in advance according to the expected start time of dialysis, there will be enough time to ensure the maturity of internal fistula. Moreover, once the operation fails, there is still time to do another vascular access, which can avoid the use of central venous intubation.
How much is a blood purification?
Routine blood pressure dialysis can be reimbursed every time around 500 yuan, so the personal cost is not very high.
Under what circumstances must dialysis be done, how about it?
Anyone who can cause renal lesions and lead to decreased renal function can be called renal damage. Clinically, there are hypertensive renal damage, lupus renal damage, drug-induced renal damage, purpura renal damage and so on. Irregular treatment, careless medication, improper diet, etc. It can accelerate the deterioration of renal function and lead to the aggravation of renal damage. Hello, dialysis is usually needed to treat renal failure. I wish you good health! The doctor asked:
Satisfied, please adopt.
Why drink more water? Briefly describe the principle of hemodialysis?
Drinking plenty of water can speed up the excretion of human waste, dialysis and blood through the dialysis machine, so that the waste that cannot be filtered out by the kidneys can be discharged. Are you satisfied?
Please accept the answer and support me.