A system for determining blood recirculation in a vascular access.

摘要

PROCEDURE FOR DETERMINING THE RECIRCULATION OF BLOOD IN A VASCULAR ACCESS (11) of a patient whose blood is being treated in an apparatus for treating blood (12) connected to the patient by an extracorporeal circuit TAKES THE FOLLOWING STAGES: REGULATE blood flow in the extracorporeal circuit to a certain value (QB); Determining a first value (HGBA0) SIGNIFICANT parameter blood concentration in the extracorporeal circuit; FIRST RESULT SET AMPLITUDE VARIATION (Q UF) ULTRAFITRACION FLOW IN TREATMENT DEVICE (12); Determining a second value (HGBA3) SIGNIFICANT parameter blood concentration in the extracorporeal circuit; CALCULATING Recirculation (AR) of the blood in the extracorporeal circuit according to the flow of blood (QB) THE EXTENT DETERMINED (QUF) the first variation of the ultrafiltration rate AND FIRST AND SECOND VALUE (HGBA0, HGBA3) parameter indicative of the concentration of the blood in the extracorporeal circuit.