The validity of these catheters varies according to insertion site. There are many types of non-tunnelled catheters available, each composed of different materials. They are fixed in place at the site of insertion with the catheter and attachments protruding. Non-tunnelled catheters are designed for short-term use only and therefore should not be used routinely in the home or outpatient setting. The lumen of a dialysis catheter has a larger diameter in order to provide a high rate of flow, which is essential in the dialysis process.Īs mentioned above, there are two main types of catheters: tunnelled and non-tunnelled. By convention, the red port identifies the “arterial” lumen that draws blood from the body, and the blue port identifies the “venous” lumen for the return of blood from the dialysis machine to the patient. If dialysis may be needed for more than a week or for patients with chronic kidney disease who require dialysis but do not have a functional permanent vascular access, a cuffed, tunnelled catheter should be used instead.ĭialysis catheters usually have at least two lumens attached to two ports (blue and red). Non-tunnelled catheters are most often used when there is an immediate need for hemodialysis (e.g. The main categories of catheters available for hemodialysis vascular access include non-tunnelled and tunnelled catheters. For a patient whose kidneys have failed, venous access or access to the blood system must be established and maintained for dialysis treatments. The access should be available for immediate use and have minimal complications in the short term (from days to weeks).
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