86 AK 98™ Dialysis Machine - Technical description
HCEN12630 Revision 07.2015
Program version 1.xx
sodium level in the blood and in the dialysis fluid, the step will either be negative or
positive.
How often the measurement is done is a preset (start value). Before the measurement
is done the flow condition has to be stable for 5 minutes and then the actual
measurement is done for 8-10 minutes.
If stable flow conditions are not met the measurement is delayed until the conditions
have been stable for 5 minutes. Then there is a measurement of the pre step condition
(5 minutes) then step is added and the actual measurement is done. The time can be
a bit flexible depending on the hydraulic delay and the preset of the step length. If a
measurement of pre step condition is disturbed by an alarm or change of blood flow,
the measurement is rescheduled to be performed again when the conditions are
stable.
The limits for conductivity are widened during the measurement and until 1 minute
after. Stable flow conditions:
No changes in: Blood flow, UF-rate or Fluid composition No: UF-tarations (bypass) or
Bypass Alarms (bypass or blood pump stop)
The following can interrupt a measurement:
● Blood flow stop or change
● UF stop
● sodium and bicarbonate (conductivity)
● temperature
● dialysis fluid flow
● UF volume
● profiling settings
If a measurement is interrupted, the measurement will be rescheduled until stable flow
conditions are met.
If the limit for sodium load has been reached an attention is issued.
3.3.3.6.12 Blood leak detection
Blood leakage is detected by a detector situated between channel 2 (or the optional
conductivity cell C, if it is installed) and the Suction pump.
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