University of Washington

Hr, Incorporated

Mahboob Ahmed

James J Cole

Suhail Ahmad

There is disclosed a method for rapidly and inexpensively determining the amount of recirculation in a patient undergoing a dialysis treatment comprising measuring temperature of an arterial limb and a venous limb of a dialysis access, decreasing temperature of blood being returned to the patient from about 0.5.degree. C. to about 30.degree. C. without adding volume, and measuring temperature of the arterial limb and the venous limb of the dialysis access to determine if there is a temperature drop in the arterial limb as evidence of recirculation. There is further disclosed an improved blood tubing set for use in dialysis and for simultaneously determining recirculation according to the inventive method herein, comprising a blood tubing set having an arterial limb comprising an arterial access device and an arterial tube and having a venous limb comprising a venous access device and a venous tube, wherein an access device comprises a means for obtaining or returning blood from or to an individual, wherein the improvement comprises a means for measuring temperature in the arterial limb and a means for measuring temperature in the venous limb.

Hemodialysis recirculation measuring method

Dryers with a timed drying cycle of user selectable duration and a continuous drying cycle which is terminated only upon receipt of an input from the user of the dryer. An optional module allows the user to select the maximum temperature wanted in the dryer cabinet, the minimum temperature needed for effective drying is set at the factory. Control is exercised via a microprocessor over the heater and the fan of a heater/fan unit, a recirculating blower, and the blower of an optional HEPA filter assembly if that assembly is present.

Growing community of inventors

Bothell, WA, United States of America

Mahboob Ahmed