Chronic kidney failure refers to ongoing kidney damage or reduced kidney function for more than 3 months. Even if the kidney function is reduced to 35-50% of normal, it does not cause any systemic symptoms.
In particular, chronic renal failure, unlike acute renal failure, is a condition where the kidney’s function has deteriorated and has not recovered its normal function. At this stage, hemodialysis, a treatment method that removes part of the blood to filter out waste products and put the blood back into the body, which is needed.
Which arteriovenous fistula should be identified during hemodialysis?
In hemodialysis, an arteriovenous fistula is required. As hemodialysis is difficult with blood vessels in our body, blood is filtered using a machine, but veins are not suitable because blood vessel walls are weak and blood flow is slow, and arteries are not suitable because that they are deep and hard to find. and the blood flow is strong.
Therefore, an arteriovenous fistula must be created for dialysis. An arteriovenous fistula connects adjacent arteries and veins, and is a way of supplementing the weaknesses of veins and arteries and taking advantage of their strengths. In most cases, autologous blood vessels are used, but in rare cases, artificial blood vessels are attached.
The arteriovenous fistula created must be managed. As it was created by artificially deforming the structure, it tends to return to its original shape. Veins originally have weak blood pressure, but as blood flow is artificially increased, they narrow or the walls of the blood vessels become thicker to maintain the original condition.
In addition, since dialysis is performed three times a week on average, various problems such as the formation of calluses can occur due to high stimulation.
If it is maintained continuously, it can be used for a long time of 10 years or more. Therefore, management by regular ultrasound examination every 3 to 6 months is recommended.
Support : Chanjoong Choi, Director of Choice Surgery
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