n n n n n n n
NSWERS
Frequency is measured in n n n n
, and is a unit of 1 cycle p
n n n n n n n n
er second
n
hertz
The height of the waveform (measured in mV or uV) amplitu
n n n n n n n n n n
de
Increases or decreases the signal size of the amplifier signal Gain
n n n n n n n n n n
BMI chart n
<=18.5 underweight
n
18.6-24.9 normal n
25-29.9 overweightn
30-39.9 obese n
>40 extremely obese
n n
, NBRC SDS EXAM (ACTUAL 2025) QUESTIONS WITH A
n n n n n n n
NSWERS
to prevent artifact, which is the most important, quality hook
n n n n n n n n n
up or utilization of filters
n n n n
quality hookup n
Causes for troubleshooting ECG artifact inc
n n n n n
orrect electrode placement n n
re-reference electrodes (double reference or average M1-n n n n n n
M2 improper site preparation
n n n
Best mehtoud to eliminate 60hz artifact CM
n n n n n n
R
To eliminate 60Hz artifact ens
n n n n
ure equipment is grounded avoi
n n n n
d extension cords maintain low
n n n n
n impedance
use a single patient ground
n n n n
ensure proper site preparation/electrode placement
n n n n
*should be corrected before the study begins
n n n n n n
, NBRC SDS EXAM (ACTUAL 2025) QUESTIONS WITH A
n n n n n n n
NSWERS
Movement artifact n
identify and correct the problem and document the action * not
n n n n n n n n n n n
necessary to go into room to correct
n n n n n n
Sweat artifact (sway) can be corrected by co
n n n n n n n
oling the patient
n n
Pen blocking occurs when the
n n n n n
gain is set too high
n n n n
To correct pen blocking
n n n
increase the sensitivity or decrease the gain
n n n n n n
Increasing the gain will n n n n
the waveform
n n
increase
Increasing the sensitivity will n n n n the waveform
n
, NBRC SDS EXAM (ACTUAL 2025) QUESTIONS WITH A
n n n n n n n
NSWERS
decrease
Troubleshoot electrode popping reappl n n n
y the electrode
n n
re-reference the electrode n n
eliminate electrical interferance if possible
n n n n
Optimal pap pressure is achieved when the AHI is
n n n n n n n n
including supine and REM sleep l n n n n n
ess than 5
n n
Preferred treatment for OSA n n n n
PAP
CPAP pressure should be increased until all of the following 4 are
n n n n n n n n n n n
eliminated
n
apneas hyp n
opneas RE n
RAs