SDS EXAM NBRC 170 QUESTIONS AND ANSWERS UPDATED
2026 GRADED A+ AND VERIFIED
The recommended HFF for recording electocardiograph channel is - CORRECT
ANSWER - 70Hz
Which of the following would best describe rhythmic movement disorder?
1. Minimum frequency of 0.3Hz
2. Max frequency of 2.0Hz
3. Min number of 4 rhythmic movements
a.1,2
b.2,3
c.1,3
d.1,2,3 - CORRECT ANSWER - b
A 14 year old boy is undergoing an overnight sleep study and has been stared on
CPAP. The pt is currently on 8cmH2O CPAP. What is the recommended max
CPAP pressure for this pt - CORRECT ANSWER - 20cmH2O
What is max CPAP for pts under 12 years old? - CORRECT ANSWER -
15cmH2O
A pt recently completed an MSLT having obtained a total score of 10. Which of the
following would best describe managing the pts daytime sleepiness? -
,CORRECT ANSWER - Troublesome
Classify the following MSLT scores:
0 - 5 minutes...
6 - 10 minutes...
11 - 15 minutes...
16 - 20 minutes... - CORRECT ANSWER - ...Severe
...Troublesome
...Manageable
...Excellent
During an MSLT a pt has had 5 naps w/o onset of REM...what should be done
next?
a. End the study
b. Have pt take 6th nap - CORRECT ANSWER - b. 6th nap
MSLT is a seris of ____ to ____naps, each ____min long, ____ hours apart.
______ naps will be suffieicent if sleep onset REM has occurred in 2 naps. -
CORRECT ANSWER - 4 to 5 each 20min long and 2 hours apart
4
In MSLT the 1st nap begins ___ to ____ hours after the overnight PSG has
concluded - CORRECT ANSWER - 1.5 to 3 hours
,MSLT is not recommended the morning after what type of study - CORRECT
ANSWER - Split
MSLT is not used to diagnose narcolepsy if the TST on the prior night study was
less than ____ hours - CORRECT ANSWER - 6
State 2 methods for ending a nap in an MSLT - CORRECT ANSWER - 1. No
sleep onset after 20min
2. After 15min of continuous recording following sleep onset
List channels used in sleep montage for an MSLT - CORRECT ANSWER -
EEG (2 leads: Central and Occipital)
2 Reference Leads (M1 and M2)
E1 and E2 (Eyes)
2 EMG leads (chin and 2 submentalis only)
ECG
List 3 items that must be scored for MSLT - CORRECT ANSWER - 1. Sleep
latencies for each nap
2. MSLT for the entire test (avg of ALL naps)
3. SOREM periods
, Correct postion for and esophageal pH monitoring catheter is... - CORRECT
ANSWER - advance catheter until pH< 4.0 and then withdraw 5cm, tape and
record tube placement at nostril
Describe the anatomic position an esophageal pH catheter should be placed -
CORRECT ANSWER - Cather tip should be 5cm above the upper border of the
lower esophgeal sphincter
Another name for the disinfecting agent Cidex?
How long for this agent to disinfect?
How long for this agent to sterilize - CORRECT ANSWER - Alkaline
gluteraldeyde 10 min
10 hours
Another name for the disinfecting agent Sonacide?
How long for this agent to disinfect?
How long for this agent to sterilize? - CORRECT ANSWER - Acid
gluteraldehyde
10 min
1 hour
An ECG tracing shows a beat with an irregular rhytm, QRS >0.12sec, and a varying
rate. The sleep tech would classify this as - CORRECT ANSWER - PVC
2026 GRADED A+ AND VERIFIED
The recommended HFF for recording electocardiograph channel is - CORRECT
ANSWER - 70Hz
Which of the following would best describe rhythmic movement disorder?
1. Minimum frequency of 0.3Hz
2. Max frequency of 2.0Hz
3. Min number of 4 rhythmic movements
a.1,2
b.2,3
c.1,3
d.1,2,3 - CORRECT ANSWER - b
A 14 year old boy is undergoing an overnight sleep study and has been stared on
CPAP. The pt is currently on 8cmH2O CPAP. What is the recommended max
CPAP pressure for this pt - CORRECT ANSWER - 20cmH2O
What is max CPAP for pts under 12 years old? - CORRECT ANSWER -
15cmH2O
A pt recently completed an MSLT having obtained a total score of 10. Which of the
following would best describe managing the pts daytime sleepiness? -
,CORRECT ANSWER - Troublesome
Classify the following MSLT scores:
0 - 5 minutes...
6 - 10 minutes...
11 - 15 minutes...
16 - 20 minutes... - CORRECT ANSWER - ...Severe
...Troublesome
...Manageable
...Excellent
During an MSLT a pt has had 5 naps w/o onset of REM...what should be done
next?
a. End the study
b. Have pt take 6th nap - CORRECT ANSWER - b. 6th nap
MSLT is a seris of ____ to ____naps, each ____min long, ____ hours apart.
______ naps will be suffieicent if sleep onset REM has occurred in 2 naps. -
CORRECT ANSWER - 4 to 5 each 20min long and 2 hours apart
4
In MSLT the 1st nap begins ___ to ____ hours after the overnight PSG has
concluded - CORRECT ANSWER - 1.5 to 3 hours
,MSLT is not recommended the morning after what type of study - CORRECT
ANSWER - Split
MSLT is not used to diagnose narcolepsy if the TST on the prior night study was
less than ____ hours - CORRECT ANSWER - 6
State 2 methods for ending a nap in an MSLT - CORRECT ANSWER - 1. No
sleep onset after 20min
2. After 15min of continuous recording following sleep onset
List channels used in sleep montage for an MSLT - CORRECT ANSWER -
EEG (2 leads: Central and Occipital)
2 Reference Leads (M1 and M2)
E1 and E2 (Eyes)
2 EMG leads (chin and 2 submentalis only)
ECG
List 3 items that must be scored for MSLT - CORRECT ANSWER - 1. Sleep
latencies for each nap
2. MSLT for the entire test (avg of ALL naps)
3. SOREM periods
, Correct postion for and esophageal pH monitoring catheter is... - CORRECT
ANSWER - advance catheter until pH< 4.0 and then withdraw 5cm, tape and
record tube placement at nostril
Describe the anatomic position an esophageal pH catheter should be placed -
CORRECT ANSWER - Cather tip should be 5cm above the upper border of the
lower esophgeal sphincter
Another name for the disinfecting agent Cidex?
How long for this agent to disinfect?
How long for this agent to sterilize - CORRECT ANSWER - Alkaline
gluteraldeyde 10 min
10 hours
Another name for the disinfecting agent Sonacide?
How long for this agent to disinfect?
How long for this agent to sterilize? - CORRECT ANSWER - Acid
gluteraldehyde
10 min
1 hour
An ECG tracing shows a beat with an irregular rhytm, QRS >0.12sec, and a varying
rate. The sleep tech would classify this as - CORRECT ANSWER - PVC
