Medical procedures >>>> Hemisorption
Hemisorption.
Hemosorption is a medical procedure used to remove intoxication products from the bloodstream. The essence of the method consists in running blood through a reservoir with a sorbent, on the surface of which toxic substances will have to be adsorbed. As a sorbent, ion-exchange resins or activated carbon are used (when using activated carbon, the procedure is called hemocarboperfusion). Sorbents are selective or specific (selectively adsorb substances) and non-selective or non-specific. Immunosorbents are currently being developed, the purpose of which is to bind antigen and antibody immobilized on sorbent granules. Such sorbents allow you to filter blood at a high biochemical level.
The hemosorption procedure is carried out in cases of severe poisoning (drugs, chemicals), with generalized infections, with renal and hepatic insufficiency.
Hemisorption is carried out in two types: arteriovenous or veno-venous type and resembles the hemodialysis procedure. A reservoir filled with a sorbent is connected to the patient's vessels using tubes and pumps blood through the reservoir using a pump. At the same time, blood clotting, pressure is controlled, and air bubbles are separated. The procedure is carried out within 1-2 hours, during which time one or two volumes of circulating blood can be pumped. The clearance of the blood collection and infusion needle matches the diameter of the opening of the blood transfusion needles.
Hemosorption, like any medical intervention, can have complications: pressure drop, chills, embolism.
Contraindications to hemosorption are:
- bleeding,
- risk of bleeding,
- low blood pressure,
- hypoproteinemia,
- decompensated cardiovascular diseases,
- oncology at the stage of metastasis.
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