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    • 18. 发明公开
    • SYSTEME DE DETERMINATION DE LA RECIRCULATION DU SANG DANS UN ACCES VASCULAIRE
    • EINEMVASKULäRENZUGANG VORRICHTUNG ZUR BESTIMMUNG DER BLUTREZIRATION
    • EP0886529A1
    • 1998-12-30
    • EP97943094
    • 1997-10-17
    • HOSPAL AG
    • CAVICCHIOLI GIOVANNICANINI ENRICOFAVA MASSIMO
    • A61M1/14A61M1/16A61M1/34A61M1/36
    • A61M1/3621A61M1/16A61M1/3609A61M1/3653A61M1/3655A61M1/3658A61M2202/0433A61M2205/3368A61M2205/52A61M2230/65
    • A method for determining the recirculation of blood in a vascular access (11) of a patient whose blood is subjected to a treatment in a blood treating apparatus (12) connected to the patient by an extra-corporal circuit comprises the following steps: regulating the flow rate of in the extra-corporal circuit at a predetermined value (QB); determining a first value (HGBA0) of the parameter representing the concentration of blood in the extra-corporal circuit; bringing about a first variation of predetermined amplitude (QUF) of the ultrafitration flow rate in the treating apparatus (12); determining a second value (HGBA3) of the parameter representing the concentration of blood in the extra-corporal circuit; computing the recirculation (AR) of the blood in the extra-corporal circuit on the basis of the blood flow rate (QB), of the predetermined amplitude (QUF) of the first variation of the ultrafiltration flow rate and of the first and second values (HGBA0, HGBA3) of the parameter representing the blood concentration in the extra-corporal circuit.
    • 该方法允许确定血液在体外循环中进行治疗(12)的患者的血管通路(11)中血液的再循环。 该过程包括调节体外血液中的血液流量和预定值(QB),以及确定代表体外血液中血液浓度的参数的第一值(HGBA0)。 治疗过程中超滤流速的幅度变化(QUF)。 (12)。 然后确定浓度参数的第二个值(HGBA3)。 根据血液流量(QB),超滤流速振幅(QUF)和两次参数流量测量值确定体外循环血液的再循环(AR)。