SDS EXAM – NBRC LATEST 2025-2026 REVISED
UPDATE EXAM QUESTIONS AND ANSWERS|
COMPREHENSIVE EXAM
Describe the anatomic position an esophageal pH catheter should be
placed - 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 - 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? - 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 - Answer-PVC
, Normal QRS interval is - Answer-0.04 - 0.10sec (No bigger than 2.5
tiny boxes)
Normal PR interval is - Answer-0.12-0.20 sec (No bigger than 1 large
box)
Formula for calculating Hr on ECG tracing - Answer-300 % # of large
boxes between R waves
Bradycardia is Hr less than - Answer-40 bpm while asleep for longer
than 2 minutes
Describe a multi-focal PVC traching - Answer-negative wide QRS
deflection
Couplet on ECG refers to - Answer-Two PVC in a row
Multiple PVCs in a row can cause what lethal arrhythmia - Answer-v-
tach
Write the formula that relates Volts, Current (I), and Resistance.
This formula is also known as _______________ Law - Answer-V = I x
R
Ohms Law
,Write the formula that relates Volts, Sensitivity and Pen Deflection -
Answer-V = S x PD
In the 10-20 system, the acronym FCPOT stands for - Answer-Frontal
Central
Parietal
Occipital
Temporal
In the 10-20 system, the sagittal, coronal planes are divided what % -
Answer-20%
From naison to Fpz is what %
From Inion to Oz is what %
From M1/M2 to T3/T4 is what % - Answer-10%
From O1/O2 to Oz is what %
From Fp1/Fp2 to Fpz is what % - Answer-5%
In the 10-20 system, the parasagettial planes (Fp1 to O1) and (Fp2 to
O2) are divided into what % - 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 - 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 - Answer-0.3 - 35Hz 7uv/mm 500Hz
For the following channels, list the:
LFF - HFF Sensitivity Sampling Rate
ECG - Answer-0.3 - 70Hz 20uv/mm 500Hz
For the following channels, list the
LFF - HFF Sensitivity Sampling Rate
Chin - Answer-10 - 100Hz 2uv/mm 500Hz
For the following channels, list the:
LFF - HFF Sensitivity Sampling Rate
Legs
Snore - Answer-10 - 100Hz 7uv/mm 500Hz
UPDATE EXAM QUESTIONS AND ANSWERS|
COMPREHENSIVE EXAM
Describe the anatomic position an esophageal pH catheter should be
placed - 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 - 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? - 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 - Answer-PVC
, Normal QRS interval is - Answer-0.04 - 0.10sec (No bigger than 2.5
tiny boxes)
Normal PR interval is - Answer-0.12-0.20 sec (No bigger than 1 large
box)
Formula for calculating Hr on ECG tracing - Answer-300 % # of large
boxes between R waves
Bradycardia is Hr less than - Answer-40 bpm while asleep for longer
than 2 minutes
Describe a multi-focal PVC traching - Answer-negative wide QRS
deflection
Couplet on ECG refers to - Answer-Two PVC in a row
Multiple PVCs in a row can cause what lethal arrhythmia - Answer-v-
tach
Write the formula that relates Volts, Current (I), and Resistance.
This formula is also known as _______________ Law - Answer-V = I x
R
Ohms Law
,Write the formula that relates Volts, Sensitivity and Pen Deflection -
Answer-V = S x PD
In the 10-20 system, the acronym FCPOT stands for - Answer-Frontal
Central
Parietal
Occipital
Temporal
In the 10-20 system, the sagittal, coronal planes are divided what % -
Answer-20%
From naison to Fpz is what %
From Inion to Oz is what %
From M1/M2 to T3/T4 is what % - Answer-10%
From O1/O2 to Oz is what %
From Fp1/Fp2 to Fpz is what % - Answer-5%
In the 10-20 system, the parasagettial planes (Fp1 to O1) and (Fp2 to
O2) are divided into what % - 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 - 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 - Answer-0.3 - 35Hz 7uv/mm 500Hz
For the following channels, list the:
LFF - HFF Sensitivity Sampling Rate
ECG - Answer-0.3 - 70Hz 20uv/mm 500Hz
For the following channels, list the
LFF - HFF Sensitivity Sampling Rate
Chin - Answer-10 - 100Hz 2uv/mm 500Hz
For the following channels, list the:
LFF - HFF Sensitivity Sampling Rate
Legs
Snore - Answer-10 - 100Hz 7uv/mm 500Hz
