Patent ID: 6706007
Filing Date: 2004-03-16
Classification: A61M

Abstract:
A method for preventing hypotension in a mammalian patient whose blood is withdrawn, treated in a blood treatment device having an extracorporeal blood circuit for removal of ultrafiltrate fluid, and infused into the patient, said method comprising:a. withdrawing blood from a peripheral vein of the patient into the blood circuit, treating the withdrawn blood flowing through the circuit to remove the ultrafiltrate fluid from the blood, and infusing the treated blood into a peripheral vein of the patient; b. monitoring oxygen concentration in the blood withdrawn from the peripheral vein and flowing through the circuit; c. determining a baseline oxygen concentration level in the blood during an initial phase of the treatment; d. automatically reducing filtrate flow from a first filtration rate of the ultrafiltrate fluid extracted from blood to a second filtration rate, if the oxygen concentration in blood varies from a predetermined target oxygen value below the baseline level, and e. automatically resuming the first filtration rate when the oxygen concentration level returns to the baseline level.