Chapter 13: Definitions
Fresenius Medical Care multiFiltrate IFU-EN-UK 15A-2015 13-1
13 Definitions
13.1 Terms
Filtrate or filtrate flow Filtrate or filtrate flow is the sum total of the dialysate, substituate, net
UF, citrate flow, and calcium flow. The filtrate or filtrate flow forms the
basis for the calculation of the calcium flow and is internally calculated
by the system.
Acute haemodialysis
treatment
Acute haemodialysis is the application of a hemodialysis therapy for the
treatment of temporary renal failure or acute exogenous poisoning.
Alarm function check The alarm function check is the verification of the proper function of the
alarm equipment.
Alarm limit The alarm limit is the measurement value which, when exceeded, will
trigger an alarm.
Arterial section The arterial section is the section of the extracorporeal circuit from the
patient to the dialyser inlet port.
Arterial pressure The arterial pressure is the pressure present at a defined site in the
arterial section between the vascular access and the pump.
Exchange volume The exchange volume is the fluid volume removed from the blood by
filtration which is replaced with substituate at a ratio of 1:1.
(The respective rate is indicated in ml/h or ml/min.)
The respective rate is the indicator at which speed the exchange is
performed.
Treatment time The treatment time is the amount of time during which balancing is
switched on.
Blood leak monitor The blood leak monitor is a device used to detect blood in the filtrate or
dialysate, e.g., consisting of a sensor (detector), alarm generator, and
a sensitivity indicator, and controller, if necessary.
Blood pump The blood pump is provided to transport the blood in the extracorporeal
circuit.
Calcium pump The calcium pump is used for adding calcium solution to the patient’s
blood.
Calcium dose The calcium dose is the volume of calcium solution added to the
patient’s blood in relation to the filtrate or filtrate flow. The dose is
specified in mmol per litre of filtrate (filtrate flow).
Calcium flow The calcium flow is the volume of calcium solution supplied to the
patient’s blood per time unit.
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