What type of blood pump is associated with occlusion during hemodialysis?

The roller-type blood pump is specifically designed to occlude the blood tubing during hemodialysis. This type of pump operates by compressing the tubing in specific spots, effectively creating a vacuum that draws blood from the patient and pushes it through the circuit. The degree of occlusion can be adjusted, but it inherently relies on reducing the lumen of the tubing to facilitate blood movement, which can lead to the potential for occlusions.

In the context of hemodialysis, occlusions can occur if there is excessive pressure on the tubing or if there are clots or kinks present. Managing these factors is critical since inadequate blood flow can lead to complications, making the characteristics of roller-type pumps particularly relevant for technicians to understand.

Other blood pump types, such as rotary, peristaltic, and magnetic pumps, function differently. They do not rely on occlusion in the same manner and therefore have different implications for blood flow and pressure management during dialysis procedures.