METHOD FOR DETERMINING THE RECIRCULATION OF BLOOD IN A VASCULAR ACCESS AND SYSTEM FOR IMPLEMENTING SAME

摘要

a method of determining the recirculation of blood in a(11) of a patient's vasculature and blood is subject totreatment in a blood treatment device (12) connected to the patient by athe extracorporeal circuit comprises the steps of: controlling the flow of theblood in the extracorporeal circuit to a fixed value (qb);a first value of the parameter relevant hgbao)the concentration of blood in the extracorporeal circuit and causing a firstchange of amplitude is determined (quf) ultrafiltration ratethe processing device (12); and determining a second value (hgba3)factor in the concentration of blood in thethe extracorporeal circuit; determining the recirculation of blood (ar) in the circuit.an extracorporeal blood flow as a function of the amplitude (qb).the first term (quf) and ultrafiltration flow rate variationthe first and second values of the parameter (hgba0, hgba3)significance of the concentration of blood in the extracorporeal circuit.