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Dialysis catheter
Two types of catheters are commonly used: dual lumen and twin single-lumen. In a prospective randomized study of 64 patients, VasCath, PermCath, and Tesio were all comparable in terms of blood flow. The Tesio and PermCath had higher reliability, while the VasCath and PermCath had similar recirculation rates. However, the Tesio exhibited higher reliability and faster blood flow compared to the PermCath and VasCath.
The most common site for a dialysis catheter is the right internal jugular vein, but the left internal jugular vein is used when the patient has a thrombotic jugular vein or a stenosed femoral vein. A permanent catheter is placed in the right internal jugular vein, and a subclavian catheter is used only for patients with bleeding diathesis.
A catheter can be implanted via either a surgical procedure or a percutaneous procedure. The surgical procedure can be performed by a bedside clinician. The surgical procedure involves sterile technique and a local anesthetic injection. The same process is used to place a central venous catheter. Depending on the location, the surgeon will perform the necessary procedure to implant the catheter. Once the catheter has been placed, the patient may be able to shower and eat normally again.
Another option is a tunneled catheter system. This is a tube that connects two 10 French catheters. The tips of both catheters lead to the right atrium. Over months of use, the flow rate was excellent. The catheter system later was enhanced by the introduction of subcutaneous plastic grommets and cuffs. Both the Canaud and Schon systems were introduced in the market. In the past year, these devices have become widely used in dialysis.
During a dialysis session, a dialysis patient must remember to handle the catheter with proper hygiene. The needle should be rinsed with saline solution before and after the dialysis. The catheter should be inserted with the cap in place to avoid air in the system. The blood flow rate should be no less than the recommended rate. A saline solution should be used after the dialysis treatment, as it helps prevent the occurrence of clots in the blood.
A tunneled CVC for dialysis is a blunt-tipped catheter that is placed through the internal jugular veins. The split-tip catheter is preferred when an angle between the two venous puncture sites is too steep. A double-lumen tube with a flexible tube is easier to insert. The second type is a tunneled CVC. It has more features than a traditional single-lumen-tip catheter.
Rigid and flexible catheters are inserted into the body through an incision made in the middle of the abdomen. The rigid catheters are often inserted into the abdominal cavity using a trocar. In the case of the latter, the external bead of the catheter is positioned outside the body. The patient is given an IV drip, which contains a dialysate solution. After the insertion, the IV can be removed.