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Original Post (Thread Starter)
#76368 06/17/2021 12:28 PM
by rudied
Hi. What is the best method to test for accuracy of dynamic pressures in nibp bpm found at doctor surgeries? If it had static measurement capabilities, that would be easy. I get too much variance in results if using a unisim vital signs simulator. Please help
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by Geoff Hannis
Geoff Hannis
There are so many variables that you haven't mentioned:-

1) Are the devices all of the same type (manufacturer and model)?
2) How many have you tested?
3) Are results reproducible?
4) Are cuff sizes all the same (and in good condition)?
5) Are the hoses all the same (condition, length)?
6) Are you concerned about pressure or BPM (or both)?
7) What sort of % variance are you experiencing?

Depending on which algorithms are used by various manufacturers, you may never get accurate dynamic results; but regardless of the tester being used, after testing a lot of NIBP units (of whatever type), and if you keep records, after some time you you will get a feel for when one or another results are outside "expected norms".
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by Adrian Jones
Adrian Jones
We have a Fluke ProSim4 Vital Signs Simulator that we use for such devices but generally we know how to get in to the engineering / verification mode.

Where a user has managed to purchase a device we cannot find information on we use the simulator and keep records on that particular monitor and refer back to them.

Depending on the algotithm the manufacturer uses you should get consistent results using a simulator such as the Fluke.
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