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46 Cards in this Set

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An arousal cannot be scored unless patient has been asleep _____.
10 seconds
sleep spindles
12-14 Hz
spindle shaped
Which is not associated with REM?
low voltage mixed freq waves with slow rolling eye movements & high EMG tone
False statement regarding REM:
REM is the deepest sleep stage (No, N3 is)
Example of cardiac rhythm which needs immediate intervention:
ventricular fibrillation
standard sleep study paper speed
10 mm/sec
Eyes moving right produces what signal from LOC?
positive deflection (negative charge)
flat nasal flow + flat signals from abd and thoracic belts:
central apnea
Most accurate device to measure UARS:
esophageal pressure balloon
Example of lead not used in sleep study:
Fp1-A2
N III is most prominent in ______
children
Reason that full 10-20 montage needed for seizures during sleep:
1. Standard montage doesn't cover entire brain
2. seizure can occur in any region
3. Standard montage doesn't may not pick up seizure
(ALL OF ABOVE)
Next step after full CPAP titration, all obstructive events gone, hypoxia remains:
add O₂
Patient scheduled for split & having OSA & desat early in test. Tech should:
Wait until required time passes before startingCPAP
Next step if during CPAP titration, patient awakens with chest pains:
Stay with patient and have another tech call in-house physician.
Nocturnal sleep of narcoleptic shows:
markedly disrupted sleep
Lead farthest from Fp1:
O2
T3 located:
above left ear
First scalp location marked during 10-20 measurement:
Cz
T or F? Gain affects the signal before the sensitivity.
F
Brainwave not in NII:
alpha
If no sleep during MSLT nap, continue for:
20 min
If sleep recorded during MSLT nap, continue for additional:
15 min
Not required to score OSA:
oxygen desaturation
TST=
REM + NREM
Shortest REM period in adults:
first one of night
Number of apneas + hypopneas per hour of sleep:
AHI
Slow wave amplitude:
75 microvolts
Patient has OSA with severe desats. EKG shows long pauses:
wake the patient up
During full blown tonic clonic seisure, tech should:
1. continue recording
2. protect patient
3. document
(ALL OF ABOVE)
Insufficient CPAP pressure results in:
1. continued disordered breathing
2. continuation of symptoms
3. continued cortical arousals
(ALL OF ABOVE)
Sleep stage requiring greatest CPAP pressure:
REM
Sleep stage with least amount of disordered breathing:
N3
One possible complication of CPAP titration:
central apnea
Measures airflow:
pressure transducer (airflow (PTAF))
Medical condition that can worsen OSA:
1. nasal congestion
2. asthma
3. COPD
(ALL OF ABOVE)
Reason that CPAP mask has open vent port:
prevent re-breathing of expired gases
Is it a significant finding if 3-year-old has AHI of 2?
YES
Abnormal CO2 for pediatric patient:
45-50 mmHg (?)
Frequency is best described by:
1. rate of repeating waves
2. CPS
3. Hertz
(ALL OF ABOVE)
Fall time constant:
37% (not 27%)
Ohm's law:
V=DS
Differential amps use what to filter out unwanted signals:
CMR
Output if:
G1 = (-100 microvolts)
G2 = (+100 microvolts)
-200 microvolts
Amplitude criteria for scoring limb movements:
8 microvolts above baseline
Number of limb movements required for PLM train:
4