SDS Exam – NBRC Questions With Complete Solutions

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 Normal QRS interval is correct answer: 0.04 - 0.10sec (No bigger than 2.5 tiny boxes) Normal PR interval is correct answer: 0.12-0.20 sec (No bigger than 1 large box) Formula for calculating Hr on ECG tracing correct answer: 300 % # of large boxes between R waves Bradycardia is Hr less than correct answer: 40 bpm while asleep for longer than 2 minutes Describe a multi-focal PVC traching correct answer: negative wide QRS deflection Couplet on ECG refers to correct answer: Two PVC in a row Multiple PVCs in a row can cause what lethal arrhythmia correct answer: v-tach Write the formula that relates Volts, Current (I), and Resistance. This formula is also known as _______________ Law correct answer: V = I x R Ohms Law Write the formula that relates Volts, Sensitivity and Pen Deflection correct answer: V = S x PD In the 10-20 system, the acronym FCPOT stands for correct answer: Frontal Central Parietal Occipital Temporal In the 10-20 system, the sagittal, coronal planes are divided what % correct answer: 20% From naison to Fpz is what % From Inion to Oz is what % From M1/M2 to T3/T4 is what % correct answer: 10% From O1/O2 to Oz is what % From Fp1/Fp2 to Fpz is what % correct answer: 5% In the 10-20 system, the parasagettial planes (Fp1 to O1) and (Fp2 to O2) are divided into what % correct answer: 25% Fp1 - F3 - C3 - P3 - O1 (left) Fp2 - F4 - C4 - P4 - O2 (right) If the distance from Fp2 to O2 is 30cm, what is the distance from C4 to P4 correct answer: 7.5cm (25% of 30cm) For the following channels, list the : LFF - HFF Sensitivity Sampling Rate F4-M1 C4-M1 O2-M1 E1-M2 E2-M2 correct answer: 0.3 - 35