Fresenius Medical Care multiFiltrate, Instructions For Use Manual

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Chapter 13: Definitions
13-2 Fresenius Medical Care multiFiltrate IFU-EN-UK 15A-2015
Calcium rate (see Calcium flow on page 13-1)
Citrate pump The citrate pump is used for adding citrate solution to the patient’s
blood.
Citrate dose The citrate dose is the volume of citrate solution added to the patient’s
blood in relation to the blood flow. The dose is specified in mmol per litre
of blood.
Citrate flow The citrate flow is the volume of citrate solution supplied to the patient’s
blood per time unit.
Citrate rate (see Citrate flow on page 13-2)
Dialysate Dialysate is the fluid used in haemodialysis that flows countercurrent to
the blood and is separated from the blood only by a filter membrane.
Diffusion Diffusion is the term used to describe the change in concentration of the
solutes as they are transported in the solutions.
Insertion switch The insertion switches are provided in the pump beds of the citrate and
calcium pumps. The system uses the insertion switches to detect
whether or not the respective Ci-Ca tube pump segments have been
correctly inserted.
Extracorporeal circuit The extracorporeal circuit is the section of the blood circuit outside the
body.
Filtrate bag The filtrate bag is the collection bag for the filtrate (ultrafiltrate).
Filter life The filter life is the total time during which the blood pump is running.
Filtration Filtration is the convective flow of solutes, e.g., water, across a
membrane, which occurs in response to a hydrostatic and / or osmotic
pressure gradient. Dissolved particles are also carried along
(convective transport) if they are not retained by the membrane.
Haemodialysis Haemodialysis is the diffusive exchange process between the dialysate
and the blood in an extracorporeal circuit.
Haemofiltration Haemofiltration is the ultrafiltration of plasma water and its solutes to
eliminate endogenous and exogenous toxins and water while
simultaneously replacing the ultrafiltrate with appropriate amounts of
electrolyte solution.
Heparin pump
(anticoagulant pump) The heparin pump is used for adding the heparin anticoagulant to the
patient’s blood in the blood circuit.
Convection Convection describes the transport of solutes together with the solvent
(drag effect, e.g., haemofiltration).
ME device Medical electrical device.
Non-ME device Non-medical electrical device.
Postdilution Adding substituate downstream of the haemofilter.