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SDS EXAM-NBRC NEWEST 2024-2025 ACTUAL EXAM
AND PRACTICE EXAM COMPLETE 400 QUESTIONS
AND CORRECT DETAILED ANSWERS ( VERIFIED
ANSWERS) |ALREADY GRADED A +
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
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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 / 4
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- 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
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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
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