SDS EXAM QUESTIONS WITH 100% ACCURATE ANSWERS Latest
UPDATE 2026 EXAM PREP
1. Sleep efficiency is defined as...
Total sleep time/# of limb movements
Total minutes during each stage of the sleep stage
Total sleep time/# of apneas / hour
Total Sleep time (x100)
2. If a patient exhibits sudden muscle weakness triggered by strong emotions,
what would be the next step in their assessment after polysomnography?
Order a complete blood count (CBC)
Conduct a multiple sleep latency test (MSLT)
Perform a physical examination
Schedule a follow-up appointment without further testing
3. The patient presents to the clinic complaining of daytime sleepiness and
reports his spouse frequently complains of his loud snoring that is
interspersed with short periods of silence. The nurse anticipates a sleep study
will reveal with condition?
Narcolepsy
Restless leg syndrome
Insomnia
Obstructive Sleep Apnea
4. Describe the impact of insufficient sleep syndrome on an individual's daily
functioning.
, Insufficient sleep syndrome only affects physical health without
impacting mental well-being.
Insufficient sleep syndrome can lead to significant daytime
impairment, affecting concentration, mood, and overall health.
Insufficient sleep syndrome is solely a psychological condition.
Insufficient sleep syndrome has no effect on daily activities.
5. If a patient with OSA continues to experience beeping and error messages
from their CPAP machine despite following the specialist's recommendations,
what should be their next step?
Replace the CPAP machine without consulting a specialist.
Contact the sleep disorders specialist for further evaluation.
Ignore the beeping and continue using the machine.
Adjust the settings on the CPAP machine without guidance.
6. If the peak-to-trough distance of a different slow wave is measured at 20 mm
with the same sensitivity of 5 µV/mm, what would be the amplitude of this
wave?
50 µV
25 µV
40 µV
100 µV
7. If a patient exhibits a mean sleep latency of 7 minutes during a sleep study,
what condition might they be diagnosed with?
Sleep apnea
Narcolepsy
, Insomnia
Idiopathic hypersomnia
8. If a patient has a mean sleep latency of 25 minutes after a period of sleep
deprivation, what might this suggest about their recovery from sleep debt?
It indicates that the patient has fully recovered from sleep debt.
It means the patient is likely experiencing insomnia.
It implies that the patient is getting too much sleep.
It suggests that the patient is still experiencing significant sleep
debt.
9. Describe the characteristics that differentiate supraventricular tachycardia
from other types of tachycardia.
Supraventricular tachycardia has irregular rhythms with no specific
heart rate.
Supraventricular tachycardia is identified by a wide QRS complex and
a slow heart rate.
Supraventricular tachycardia is defined by a normal heart rate with a
narrow QRS complex.
Supraventricular tachycardia is characterized by a narrow QRS
complex and a rapid heart rate typically exceeding 150 beats per
minute.
10. If a patient exhibits increased beta-activity during a PSG, what clinical
interventions might be considered to address potential underlying issues?
Cognitive-behavioral therapy for anxiety management
Increased sleep medication dosage
, Encouraging more caffeine intake
Recommending longer sleep duration without intervention
11. Describe how delayed sleep phase disorder affects an individual's sleep-
wake cycle.
Individuals with delayed sleep phase disorder have a consistent
sleep-wake cycle.
Individuals with delayed sleep phase disorder experience frequent
awakenings at night.
Individuals with delayed sleep phase disorder tend to fall asleep
much later than the conventional bedtime and wake up later in the
morning.
Individuals with delayed sleep phase disorder wake up earlier than
usual.
12. Describe the significance of sleep efficiency in assessing sleep quality.
Sleep efficiency only considers the time spent awake during the night.
Sleep efficiency measures the total number of hours slept each night.
Sleep efficiency indicates how effectively a person sleeps relative
to the time spent in bed.
Sleep efficiency is the ratio of deep sleep to light sleep.
13. In the patient with obstructive sleep apnea who has begun CPAP, when
should you follow up to encourage continued use of the device?
6 months
1 month
1 year
UPDATE 2026 EXAM PREP
1. Sleep efficiency is defined as...
Total sleep time/# of limb movements
Total minutes during each stage of the sleep stage
Total sleep time/# of apneas / hour
Total Sleep time (x100)
2. If a patient exhibits sudden muscle weakness triggered by strong emotions,
what would be the next step in their assessment after polysomnography?
Order a complete blood count (CBC)
Conduct a multiple sleep latency test (MSLT)
Perform a physical examination
Schedule a follow-up appointment without further testing
3. The patient presents to the clinic complaining of daytime sleepiness and
reports his spouse frequently complains of his loud snoring that is
interspersed with short periods of silence. The nurse anticipates a sleep study
will reveal with condition?
Narcolepsy
Restless leg syndrome
Insomnia
Obstructive Sleep Apnea
4. Describe the impact of insufficient sleep syndrome on an individual's daily
functioning.
, Insufficient sleep syndrome only affects physical health without
impacting mental well-being.
Insufficient sleep syndrome can lead to significant daytime
impairment, affecting concentration, mood, and overall health.
Insufficient sleep syndrome is solely a psychological condition.
Insufficient sleep syndrome has no effect on daily activities.
5. If a patient with OSA continues to experience beeping and error messages
from their CPAP machine despite following the specialist's recommendations,
what should be their next step?
Replace the CPAP machine without consulting a specialist.
Contact the sleep disorders specialist for further evaluation.
Ignore the beeping and continue using the machine.
Adjust the settings on the CPAP machine without guidance.
6. If the peak-to-trough distance of a different slow wave is measured at 20 mm
with the same sensitivity of 5 µV/mm, what would be the amplitude of this
wave?
50 µV
25 µV
40 µV
100 µV
7. If a patient exhibits a mean sleep latency of 7 minutes during a sleep study,
what condition might they be diagnosed with?
Sleep apnea
Narcolepsy
, Insomnia
Idiopathic hypersomnia
8. If a patient has a mean sleep latency of 25 minutes after a period of sleep
deprivation, what might this suggest about their recovery from sleep debt?
It indicates that the patient has fully recovered from sleep debt.
It means the patient is likely experiencing insomnia.
It implies that the patient is getting too much sleep.
It suggests that the patient is still experiencing significant sleep
debt.
9. Describe the characteristics that differentiate supraventricular tachycardia
from other types of tachycardia.
Supraventricular tachycardia has irregular rhythms with no specific
heart rate.
Supraventricular tachycardia is identified by a wide QRS complex and
a slow heart rate.
Supraventricular tachycardia is defined by a normal heart rate with a
narrow QRS complex.
Supraventricular tachycardia is characterized by a narrow QRS
complex and a rapid heart rate typically exceeding 150 beats per
minute.
10. If a patient exhibits increased beta-activity during a PSG, what clinical
interventions might be considered to address potential underlying issues?
Cognitive-behavioral therapy for anxiety management
Increased sleep medication dosage
, Encouraging more caffeine intake
Recommending longer sleep duration without intervention
11. Describe how delayed sleep phase disorder affects an individual's sleep-
wake cycle.
Individuals with delayed sleep phase disorder have a consistent
sleep-wake cycle.
Individuals with delayed sleep phase disorder experience frequent
awakenings at night.
Individuals with delayed sleep phase disorder tend to fall asleep
much later than the conventional bedtime and wake up later in the
morning.
Individuals with delayed sleep phase disorder wake up earlier than
usual.
12. Describe the significance of sleep efficiency in assessing sleep quality.
Sleep efficiency only considers the time spent awake during the night.
Sleep efficiency measures the total number of hours slept each night.
Sleep efficiency indicates how effectively a person sleeps relative
to the time spent in bed.
Sleep efficiency is the ratio of deep sleep to light sleep.
13. In the patient with obstructive sleep apnea who has begun CPAP, when
should you follow up to encourage continued use of the device?
6 months
1 month
1 year
