In a polysomnography analyzer, what is the primary function of the time code generator? correct
answers Coordinate different readings during significant events
The time code generator helps establish a precise sequence of parameter changes during
significant events by synchronizing the time relationships between various monitored parameters
and audio-visual recordings.
Limb movements must occur at least___seconds apart and within___seconds of each other in
order to qualify as part of a PLM series. correct answers 5;90
True or False
Some cholesterol-lowering drugs have been associated with worsened sleep quality. correct
answers True
Two methods for scoring REM sleep without atonia (RWA) are: correct answers Phasic and
Tonic
When scoring sustained muscle activity to qualify an epoch exhibiting REM without atonia
(RWA), criteria include at least 50% of an epoch that has a chin amplitude at least____the REM
atonia level correct answers Twice
In order to score an arousal, there must be at least___seconds of stable sleep preceding the
arousal. correct answers 10 seconds
Alpha frequency EEG is defined as correct answers 8-13Hz
For scoring apneas during a diagnostic study,which is the primary sensor to look for the > than or
= to 90% drop in peak signal excursion? correct answers Oronasal thermal
True or False
Limb movements can be scored if they occur during a respiratory event. correct answers False
Score an epoch with 13 seconds of absent chin tone and 17 seconds of elevated chin tone with
alpha frequency EEG for more than 50% of the epoch as? correct answers Wake
Significant EKG voltage can contaminate the EEG and complicate the measurement of which
EEG feature? correct answers K complex
Delta frequency correct answers Slowest at 0-4Hz
Slow wave sleep
, Generally speaking should not be present in a normal awake brain.
Theta frequency correct answers 4-8Hz
Tends to be more prominent in children.
Can reemerge in drowsy periods, and is hallmark of some normal findings including RMTD.
RMTD stands for: correct answers rhythmic (mid)temporal theta of drowsiness
Alpha frequency correct answers 8-13 Hz
Hallmark in normal awake adult brain, posterior dominant rhythm
PDR stands for correct answers Posterior dominant rhythm
Beta frequency correct answers 13-30 Hz
There must be at least ____ seconds of stable sleep preceding an EEG shift in order to qualify as
an arousak. correct answers 10 Seconds
Following an arousal during REM, if the chin tone remains low and there are no N2 defining
features or slow eye movements, score the epoch as ___ correct answers REM
True or False
It is possible to have co-morbid Cheyne-Stokes respirations and OSA in the same record correct
answers True
True or False
If a patient has Cheyne-stokes breathing, setting a backup rate too high can exacerbate loop-gain.
correct answers True
In an epoch with 29 seconds of sleep and 10 seconds of wake, you a required at least ___
seconds of slow wave activity to meet criteria for stage N3. correct answers 6 Seconds
Which of the following is true about a limb movement series? correct answers Movements in
two different legs separated by less than 5 seconds are counted as a single limb movements
When a respiratory event occurs in proximity to a limb movement, which of the following is
true? correct answers DO NOT score a LM if it occurs within <0.5 seconds before, during or
after<0.5 seconds after a respiratory event.
The midline chin EMG electrode is placed? correct answers 1 cm above the edge of the mandible