SDS EXAM – NBRC QUESTIONS AND
ANSWERS
For the following channels, list the:
LFF - HFF Sensitivity Sampling Rate
Legs
Snore - ANSWER-10 - 100Hz 7uv/mm 500Hz
For the following channels, list the:
LFF -HFF Sensitivity Sampling Rate
Airflow
Thor
Abdomen - ANSWER-0.1 - 15Hz 7uv/mm 100Hz
For the following channel, list the:
LFF - HFF Sensitivity Sampling Rate
SpO2 - ANSWER-X X 25Hz
Looking toward the REOG will cause a ______________ (_____________) deflection
on the REOG tracing - ANSWER-Positive (downward)
The front of the eye has a ________charge and the back of the eye has a ________
charge - ANSWER-+
The lower the HFF setting the _______________ waveforms - ANSWER-rounder (more
slow waves pass)
The higher the HFF setting the _________the waveforms - ANSWER-Sharper
What is CMRR and what is it used for - ANSWER-Common Mode Rejection Ratio
Filter unwanted electrical signals
Two other names for 60Hz artifact - ANSWER-Line Filter
Notch Filter
What terms describes the time in sec for a waveform to drop to 37% of its calculated
amplitude - ANSWER-Time Constant
Maximum allowable impedance value - ANSWER-5 KOhms
Minimum digital resolution - ANSWER-12 bits per sample
,A pt with Parkinsons disease is scheduled for an overnight sleep study. Which of the
following disorders should the sleep tech expect to see during the study? - ANSWER-
CSA
After completing a sleep study a pt has a sleep efficiency of 83%. What is the most
likely diagnosis of this pt - ANSWER-Normal
How is sleep efficiency calculated - ANSWER-TST/TRT(TIB)
Classifty the following sleep efficiency scores:
80 - 94%
Less than 80%
More than 95% - ANSWER-Normal
Insomnia
High sleep efficiency
A pt is noted to have EDS but no REM onset. The pt has indicated she sometimes
sleeps 14 hours per day. The sleep tech would classify this situation as - ANSWER-
Idiopathic insomnia
This dysomnia presents as EDS but without sleep onset REM or cataplexy - ANSWER-
Idiopathic Hypersomnia (Primary Hypersomnia)
List two types of Recurrent Hypersomnia - ANSWER-1. Klein Levin
2. Menstrual Related
This type of Reccurrent Hypersomnia presents with odd behaviors such as bindge
eathing, hypersexuality and confusion) ...more common in men - ANSWER-Klein Levin
syndrome
(Low volt slow wave EEG)
A sleep tech notices that the ECG channel shows a varying Hr with irregular rhythm.
The QRS is approx. 0.15sec wide and only occurs occasionally? What should the sleep
tech recommend? - ANSWER-O2 therapy
Which uses a battery, a thermocouple or a thermistor - ANSWER-Thermistor
After 3 hours of a split night study a pt has 90 documented central apneas and no
obstructive apneas. Minimal hypopneas are seen. What should the sleep tech FIRST
recommend for the pt - ANSWER-CPAP not BiLevel
After 3 hours of a split night study a pt has 90 documented central apneas and no
obstructive apneas. Minimal hypopneas are seen. Which should the tech recommend -
ANSWER-APAP
Which of the following is most likely associated with sleep apnea?
, Drug addiction
Morbid Obesity
Diabetes Mellutis
Chronic Bronchitis - ANSWER-Morbid Obesity
A pt is found to have complied with home CPAP use during a follow-up evaluation. Pt
reports no daytime sleepiness and improve sleep. Current CPAP is 8cmH2O. The Pt
lost 40 lbs since last PSG and has a current BMI of 26kg/m2. A repeat study after2
nights off CPAP shows AHI 5 and lowest SpO2 92%. EtCO2 is within normal limits and
ABG is:
7.37
PaO2 99torr
PaCO2 42torr
HCO3 24mEq/l
CPAP is not administered during the second study. When communicating with the
physician, the sleep tech should recommend that CPAP should be:
Terminated
Continued
Retitrated
Reduced - ANSWER-Terminated
Epworth classification:
Normal...
Average...
Sleepy... - ANSWER-1 - 6
7-8
9 - 24
What is the difference between the Standford Sleepiness Scale and the Epworth -
ANSWER-Standford uses simple descriptions how a pt feels during the day whereas
Epworth uses (0-3 scale) for each response.
Standford is EASIER and QUICKER
Use key terms to define the Pittsburgh SLeep Quality Index - ANSWER-COMPLEX
questionare that rates a pts sleep over the period of 1 MONTH
RELIABLE and VALID
According to AASM normal pulse rate range while asleep is - ANSWER-60 - 90
AASM normal rr - ANSWER-10 - 20 breathes per minute
List acceptable systolic and diastolic Bp range according to AASM - ANSWER-S = 120 -
150 mmHg
D = 60 - 90 mmHg
List two mandatory components of an order for a PSG - ANSWER-Signed by MD
ANSWERS
For the following channels, list the:
LFF - HFF Sensitivity Sampling Rate
Legs
Snore - ANSWER-10 - 100Hz 7uv/mm 500Hz
For the following channels, list the:
LFF -HFF Sensitivity Sampling Rate
Airflow
Thor
Abdomen - ANSWER-0.1 - 15Hz 7uv/mm 100Hz
For the following channel, list the:
LFF - HFF Sensitivity Sampling Rate
SpO2 - ANSWER-X X 25Hz
Looking toward the REOG will cause a ______________ (_____________) deflection
on the REOG tracing - ANSWER-Positive (downward)
The front of the eye has a ________charge and the back of the eye has a ________
charge - ANSWER-+
The lower the HFF setting the _______________ waveforms - ANSWER-rounder (more
slow waves pass)
The higher the HFF setting the _________the waveforms - ANSWER-Sharper
What is CMRR and what is it used for - ANSWER-Common Mode Rejection Ratio
Filter unwanted electrical signals
Two other names for 60Hz artifact - ANSWER-Line Filter
Notch Filter
What terms describes the time in sec for a waveform to drop to 37% of its calculated
amplitude - ANSWER-Time Constant
Maximum allowable impedance value - ANSWER-5 KOhms
Minimum digital resolution - ANSWER-12 bits per sample
,A pt with Parkinsons disease is scheduled for an overnight sleep study. Which of the
following disorders should the sleep tech expect to see during the study? - ANSWER-
CSA
After completing a sleep study a pt has a sleep efficiency of 83%. What is the most
likely diagnosis of this pt - ANSWER-Normal
How is sleep efficiency calculated - ANSWER-TST/TRT(TIB)
Classifty the following sleep efficiency scores:
80 - 94%
Less than 80%
More than 95% - ANSWER-Normal
Insomnia
High sleep efficiency
A pt is noted to have EDS but no REM onset. The pt has indicated she sometimes
sleeps 14 hours per day. The sleep tech would classify this situation as - ANSWER-
Idiopathic insomnia
This dysomnia presents as EDS but without sleep onset REM or cataplexy - ANSWER-
Idiopathic Hypersomnia (Primary Hypersomnia)
List two types of Recurrent Hypersomnia - ANSWER-1. Klein Levin
2. Menstrual Related
This type of Reccurrent Hypersomnia presents with odd behaviors such as bindge
eathing, hypersexuality and confusion) ...more common in men - ANSWER-Klein Levin
syndrome
(Low volt slow wave EEG)
A sleep tech notices that the ECG channel shows a varying Hr with irregular rhythm.
The QRS is approx. 0.15sec wide and only occurs occasionally? What should the sleep
tech recommend? - ANSWER-O2 therapy
Which uses a battery, a thermocouple or a thermistor - ANSWER-Thermistor
After 3 hours of a split night study a pt has 90 documented central apneas and no
obstructive apneas. Minimal hypopneas are seen. What should the sleep tech FIRST
recommend for the pt - ANSWER-CPAP not BiLevel
After 3 hours of a split night study a pt has 90 documented central apneas and no
obstructive apneas. Minimal hypopneas are seen. Which should the tech recommend -
ANSWER-APAP
Which of the following is most likely associated with sleep apnea?
, Drug addiction
Morbid Obesity
Diabetes Mellutis
Chronic Bronchitis - ANSWER-Morbid Obesity
A pt is found to have complied with home CPAP use during a follow-up evaluation. Pt
reports no daytime sleepiness and improve sleep. Current CPAP is 8cmH2O. The Pt
lost 40 lbs since last PSG and has a current BMI of 26kg/m2. A repeat study after2
nights off CPAP shows AHI 5 and lowest SpO2 92%. EtCO2 is within normal limits and
ABG is:
7.37
PaO2 99torr
PaCO2 42torr
HCO3 24mEq/l
CPAP is not administered during the second study. When communicating with the
physician, the sleep tech should recommend that CPAP should be:
Terminated
Continued
Retitrated
Reduced - ANSWER-Terminated
Epworth classification:
Normal...
Average...
Sleepy... - ANSWER-1 - 6
7-8
9 - 24
What is the difference between the Standford Sleepiness Scale and the Epworth -
ANSWER-Standford uses simple descriptions how a pt feels during the day whereas
Epworth uses (0-3 scale) for each response.
Standford is EASIER and QUICKER
Use key terms to define the Pittsburgh SLeep Quality Index - ANSWER-COMPLEX
questionare that rates a pts sleep over the period of 1 MONTH
RELIABLE and VALID
According to AASM normal pulse rate range while asleep is - ANSWER-60 - 90
AASM normal rr - ANSWER-10 - 20 breathes per minute
List acceptable systolic and diastolic Bp range according to AASM - ANSWER-S = 120 -
150 mmHg
D = 60 - 90 mmHg
List two mandatory components of an order for a PSG - ANSWER-Signed by MD
