What is hemodialysis? At what diseases is applied?
Apparatus for hemodialysis consists of three components: devices for blood supply, devices for preparation and supply of dialysate and dialyzer. The dialyser is the main part of the device. The most important functional element is a semipermeable membrane, which is made from natural materials based on cellulose, or from synthetic materials. The blood withdrawn from the patient's artery is passed through the dialyzer and is located on one side of the semipermeable membrane, while the solution, in its electrolyte composition similar to the circulating blood, accumulates on the other side of it. Water and unnecessary waste products of the body and toxins are filtered through this membrane. Proteins, blood cells, bacteria and substances with a molecular mass greater than 30000 through the membrane do not pass. Purified blood is then returned to the patient via the vein
Procedure of hemodialysis
Before starting the dialysis, the patient is examined by a doctor, measures blood pressure, pulse and temperature. The patient is then placed with vascular access and connected to a dialysis machine. During the procedure, the patient is constantly monitored. At the end of hemodialysis, an aseptic bandage is applied to the catheter placement area. The duration and frequency of sessions the doctor determines individually for each patient.
Complications of hemodialysis
- arterial hypotension;
- Muscle cramps;
- nausea and vomiting;
- infectious diseases.