2021 Volume Annual59 Issue Proc Pages 701-702
Monitoring blood removal failure, where blood flow rate decreases from a set value, is generally performed by visual pillow observation, but reports on standardization of blood circuits for dialysis have noted that blood tends to stagnate in the pillow, resulting in clots, and the emergence of some other means of monitoring would eliminate the need for pillow. Some 30% of blood circuits are currently sold with no pillow, and a new method of monitoring blood removal failure is needed. The possibility of monitoring blood removal failure by continuous measurement of blood circuit vibration due to backflow induced by blood removal failure was therefore investigated.
Measurement of the change in blood circuit vibration displacement amplitude at each blood removal pressure showed a proportional relationship between the pressure and the amplitude, thus indicating that blood removal failure can be detected by monitoring the displacement amplitude of blood circuit vibration.
