What is hemodialysis and what does hemodialysis mean

Hemodialysis is commonly referred to as dialysis, but in fact, dialysis is inaccurate, because it is actually blood washing, through the working principle of semi-permeable membranes, using dialyzers. Toxins and metabolites of the body are eliminated through the semi-permeable membrane, while other essential substances such as red blood cells and proteins, due to their large molecular weight, cannot pass through the semi-permeable membrane and return directly to the body. So as to achieve the function of simulating kidney detoxification.

Hemodialysis has been developed for almost 100 years now. At present, it is still relatively perfect, and it can be used to achieve long-term survival by adjuvanting other drugs. The longest is more than 20 years.

Unfortunately, the cost of dialysis is still quite high, and if you don't have health insurance, it will be very difficult for you to pay.

During hemodialysis, the body's blood needs to enter the dialyzer quickly, be washed and then flow back into the body. Superficial veins are easy to puncture, but because the venous blood flow rate is too slow, the blood flow is difficult to meet the requirements of dialysis; The arterial blood flow is large, which can meet the requirements of hemodialysis, but the site is deep, the puncture is difficult and not easy to use repeatedly. Therefore, surgery is required to connect the artery with the superficial vein, which is called arteriovenous fistula surgery, so that the arterial blood flows in the superficial vein, so that the blood flow meets the requirements of dialysis.

It is the "lifeline" of uremia patients and needs to be well protected.

I often go to the hospital to queue up to send money, blindly, and there is no way to have any effect. It's called dialysis! In fact, it is to make the patient's family financially overdrawn. Otherwise, those people will not die.

Because those people don't learn and don't know how to do it!

Hemodialysis: It is one of the ways to replace the kidney in patients with chronic renal failure. It drains blood from the body to the outside of the body, through a dialyzer composed of countless hollow fibers, the blood and electrolyte solutions containing similar concentrations of the body are exchanged inside and outside the hollow fibers through diffusion or convection, removing metabolic wastes from the body, maintaining electrolytes and acid-base balance.

The principle is as follows:1Diffusion: is the main mechanism of solute clearance in HD. The solute is transported from the high to the low side by a concentration gradient, a phenomenon known as diffusion. The diffuse transport energy of solutes comes from the irregular movement of the molecules or particles themselves of solutes;

2.Convection: The movement of solutes along with the solvent through the semi-permeable membrane is called convection.

The solute and solvent move together as a result of the action of frictional forces. Unaffected by the difference in the molecular weight of the solute and its concentration gradient, the driving force of the transmembrane is the hydrostatic pressure difference between the two sides of the membrane, the so-called solute traction.

Dialysis is a medical term that refers to a separation and purification technology that separates small molecules from biological macromolecules through the principle of diffusion into water or buffer through a semi-permeable membrane. Dialysis** is a method of excreting constituent solutes or water from the body through a semipermeable membrane and is often used in cases of acute or chronic renal failure or the accumulation of drugs or other toxins in the body.

Dialysis used in medicine is broadly divided into three categories: hemodialysis, peritoneal dialysis, and colon dialysis.

Hemodialysis, also known as artificial kidney and dialysis, is a type of blood purification technology.

Peritoneal dialysis uses the peritoneum as a semi-permeable membrane, and uses gravity to inject the prepared dialysate into the patient's peritoneal cavity through the catheter to remove metabolites, toxic substances and correct water in the body.

Colon dialysis is performed by injecting filtered water into the human colon to cleanse the intestines and remove toxins from the body.

It is understood that there are basically no fruits to be avoided in such patients. It depends on the condition of each patient. Peritoneal dialysis patients are not restricted, and if there is low potassium, they are encouraged to eat potassium-rich fruits such as oranges and oranges.

Anuria dialysis patients and hemodialysis patients should avoid potassium-containing foods during non-dialysis periods.