Apparatus for extracorporeal blood treatment and method for calculating caloric balance in an apparatus for extracorporeal blood treatment
AssigneeGambro Lundia AB
InventorsDominique Pouchoulin, Viktoria Roos
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Abstract
An apparatus for extracorporeal blood treatment comprises a control unit (100) which, during the extracorporeal blood treatment, is programmed for: computing a mass balance rate (Jsoln) of a selected solute or solutes from a solute concentration (Csoln) in dialysis fluid and/or infusion fluids, from a patient solute concentration (Cpsoln), from a fluid flow rate or rates (Qpbp, Qpre, Qpost, Qdial, Qanc) and from a filtration flow rate (Qfil) or a patient fluid removal rate (Qpfr); computing, from the computed mass balance rate (Jsoln) and from a specific energy load (Emetsoln) of each solute, an energy balance (Esoln) due to the selected solute or solutes.
Claims26
An apparatus for extracorporeal blood treatment comprising:
- a treatment unit;
- a blood circuit coupled to the treatment unit and comprising a blood removal line and a blood return line configured to connect to a vascular system of a patient;
- a blood pump coupled to a pump section of the blood circuit;
- an effluent line connected to the treatment unit;
- at least one infusion line connected to the blood circuit and/or a dialysis line connected to the treatment unit;
- wherein the at least one infusion line and/or the dialysis line are connected to a source of a fluid;
- a control unit operably connected to the blood pump and configured to receive:
- a solute concentration of a selected solute in the fluid;
- a patient parameter related to a patient solute concentration of the selected solute in a patient's blood;
- a specific energy load of the selected solute;
- a measured or set fluid flow rate or rates of a fluid crossing the at least one infusion line and/or the dialysis line;
- a measured or set filtration flow rate in the treatment unit or a measured or set patient fluid removal rate;
- during the extracorporeal blood treatment, the control unit being configured to:
- compute a mass balance rate of the selected solute from the solute concentration, from the patient parameter, from the fluid flow rate or rates, and from the filtration flow rate or the patient fluid removal rate;
- compute, from the computed mass balance rate and from the specific energy load, an energy balance due to the selected solute during the extracorporeal blood treatment.
An apparatus for extracorporeal blood treatment comprising:
- a treatment unit;
- a blood circuit coupled to the treatment unit and comprising a blood removal line and a blood return line configured to connect to a vascular system of a patient;
- a blood pump coupled to a pump section of the blood circuit;
- an effluent line connected to the treatment unit;
- a dialysis line connected to the treatment unit;
- at least one infusion line connected to the blood circuit and comprising one or more of:
- a pre-blood pump line;
- a pre-infusion line;
- a post-infusion line;
- and
- an ancillary infusion line;
- wherein the at least one infusion line and the dialysis line are connected to a source of a fluid;
- a control unit operably connected to the blood pump and configured to compute a caloric balance over a given time by integrating an energy balance over the given time, the control unit being configured to receive:
- a solute concentration of a selected solute in the fluid, the selected solute comprising citrate or glucose or lactate;
- a patient solute concentration of the selected solute in patient's blood;
- a specific energy load of the selected solute;
- a measured or set fluid flow rate of a fluid flowing in the at least one infusion line;
- a measured or set fluid flow rate of a fluid flowing in the dialysis line;
- a measured or set filtration flow rate in the treatment unit or a measured or set patient fluid removal rate;
- the control unit being configured to, during the extracorporeal blood treatment:
- compute a mass balance rate of the selected solute from the solute concentration, from
- the patient solute concentration,
- the fluid flow rate flowing in the at least one infusion line, and
- either the filtration flow rate or the patient fluid removal rate;
- compute, from the computed mass balance rate and from the specific energy load, the energy balance due to the selected solute during the extracorporeal blood treatment.
Dependencies are inferred from the claim text.