RPSGT Study Lesson
Domain 2
Interactive Review
RPSGT Domain 2: Sleep Study Preparation and Performance
Today’s Sleep Pathways Guild study lesson focuses on Domain 2 of the RPSGT exam: Sleep Study Preparation and Performance.
Domain 2 is where the sleep technologist moves from patient intake into the technical work: preparing equipment, applying sensors, selecting the correct montage, following procedure protocols, recognizing signal problems, correcting artifacts, documenting interventions, and protecting the quality of the sleep recording.
How to Think Like a Sleep Technologist in Domain 2
Before and during the study, the sleep technologist should always be thinking:
Domain 2 Task Breakdown
Domain 2: Sleep Study Preparation and Performance
RPSGT Blueprint Weight: 27.3%
Task A: Determine Technical Preparation
This includes equipment and supplies, electrode and sensor placement, modifications based on patient need, site preparation and application, technical specifications and instrumentation, montage selection, and infection control such as universal precautions, PPE, and equipment disinfection.
Task B: Perform Procedures and Follow Practice Guidelines
This includes adult PSG, pediatric PSG, Multiple Sleep Latency Test, Maintenance of Wakefulness Test, and Home Sleep Apnea Testing.
Task C: Identify, Respond, and Document
This includes waveform variations, artifacts, equipment malfunction, recognition of cardiac, respiratory, movement, and capnography events, technical settings such as filters, sensitivity, and gain, channel and physiological calibrations, and impedance verification.
Practice Set Breakdown
7 questions
6 questions
7 questions
20 questions
These questions are adapted from the Sleep Pathways Guild internal RPSGT question-bank inventory and edited for public educational review.
Domain 2 Memory Tool: PREP, PLACE, PROVE, PERFORM, PROTECT
Prepare equipment, supplies, room, and infection control materials.
Place electrodes and sensors correctly, with patient-specific modifications when needed.
Verify impedance, signals, calibrations, and montage before the study begins.
Follow the correct PSG, pediatric PSG, MSLT, MWT, or HSAT procedure.
Protect data quality by recognizing artifacts, malfunctions, and physiologic events.
Domain 2 is not only about putting wires on correctly. It is about protecting the quality of the entire sleep study from setup through documentation.
Pediatric Sleep Pearl: Pediatric PSG Is Not Just Adult PSG on a Smaller Patient 🧸
Pediatric PSG appears directly in Domain 2 Task B. Pediatric patients often need age-specific preparation, caregiver support, extra comfort measures, careful safety planning, and attention to signals such as airflow, respiratory effort, oxygen saturation, and sometimes CO₂ monitoring depending on the order and protocol.
Sleep tech reminder: children may move more, tolerate sensors differently, need caregiver reassurance, and require developmentally appropriate explanations. The goal is still the same: safe setup, clean signals, accurate documentation, and a study that can be interpreted.
Study Tracker
Check these off as you review.
20 Practice Questions With Click-to-Reveal Answers
1. Which signal is required to identify respiratory effort?
Topic: Respiratory Signals
A. Thermistor
B. Nasal pressure
C. Thoracoabdominal belts
D. Snore microphone
Reveal answer
Rationale: Thoracoabdominal effort belts are the standard signals used to identify respiratory effort.
2. According to AASM guidelines, what is the required maximum impedance level for EEG and EOG electrodes?
Topic: Instrumentation
A. 10 kΩ
B. 5 kΩ
C. 1 kΩ
D. 20 kΩ
Reveal answer
Rationale: EEG and EOG electrodes should be maintained at 5 kΩ or less to support quality signal acquisition.
3. What are the standard low-frequency filter and high-frequency filter settings for an EMG channel?
Topic: Filters and Settings
A. LFF 0.3 Hz, HFF 35 Hz
B. LFF 10 Hz, HFF 100 Hz
C. LFF 0.1 Hz, HFF 15 Hz
D. LFF 1.0 Hz, HFF 70 Hz
Reveal answer
Rationale: The standard EMG filter settings are a 10 Hz low-frequency filter and a 100 Hz high-frequency filter.
4. During biocalibrations, the patient is instructed to “look left” and then “look right.” Assuming standard electrode placement, the left and right EOG channels should show:
Topic: Biocalibrations
A. In-phase deflections
B. Out-of-phase deflections
C. No deflections
D. High-frequency muscle artifact only
Reveal answer
Rationale: Conjugate eye movements produce opposite-polarity EOG deflections on standard left and right EOG channels.
5. To accurately measure head circumference in the 10–20 system, the tape measure should pass through which specific landmarks?
Topic: 10–20 System
A. Nasion, Cz, Inion
B. Fpz, T3, Oz, T4, Fpz
C. Fp1, C3, O1
D. Fz, Cz, Pz
Reveal answer
Rationale: Head circumference in the 10–20 system is measured around the head through Fpz, T3, Oz, T4, and back to Fpz.
6. According to AASM guidelines, the recommended maximum averaging time for an oximeter used during PSG is:
Topic: Oximetry
A. 1 second
B. 3 seconds
C. 5 seconds
D. 10 seconds
Reveal answer
Rationale: Oximeters used during PSG should have an averaging time of no more than 3 seconds.
7. Which channel typically uses the highest low-frequency filter setting among these PSG signals?
Topic: Filters and Sampling
A. EEG
B. EOG
C. Chin EMG
D. EKG
Reveal answer
Rationale: EMG channels generally use a much higher low-frequency filter than EEG or EOG.
8. During a Multiple Sleep Latency Test, a Sleep Onset REM Period is recorded when REM sleep occurs within how many minutes of sleep onset?
Topic: MSLT
A. 10 minutes
B. 15 minutes
C. 20 minutes
D. 30 minutes
Reveal answer
Rationale: A sleep onset REM period is scored when REM occurs within 15 minutes of sleep onset.
9. What does end-tidal CO₂ monitoring primarily measure?
Topic: CO₂ Monitoring
A. Oxygen saturation in the blood
B. Carbon dioxide concentration at the end of an exhaled breath
C. Respiratory effort
D. Airflow volume
Reveal answer
Rationale: End-tidal CO₂ monitoring measures carbon dioxide at end exhalation, reflecting ventilatory status.
10. During an MSLT, the patient’s mean sleep latency is 6 minutes, and they exhibit 2 Sleep Onset REM Periods. These findings are most indicative of:
Topic: MSLT
A. Idiopathic hypersomnia
B. Narcolepsy
C. Obstructive sleep apnea
D. Normal daytime sleepiness
Reveal answer
Rationale: A short mean sleep latency with two sleep onset REM periods is strongly suggestive of narcolepsy.
11. During an MSLT, if a patient falls asleep, the nap trial must be terminated:
Topic: MSLT
A. 10 minutes after sleep onset
B. 15 minutes of continuous sleep
C. 15 minutes from the first epoch of scored sleep
D. 20 minutes after lights out, regardless of sleep onset
Reveal answer
Rationale: When sleep occurs in an MSLT nap, the trial continues for 15 minutes from the first epoch of scored sleep.
12. During a Maintenance of Wakefulness Test, the trial is terminated if the patient achieves unequivocal sleep, which is defined as:
Topic: MWT
A. 1 epoch of N1 sleep
B. 3 consecutive epochs of N1, or 1 epoch of any other sleep stage
C. 15 minutes of continuous sleep
D. 5 consecutive epochs of N1
Reveal answer
Rationale: Unequivocal sleep during MWT is defined as three consecutive epochs of N1 or one epoch of another sleep stage.
13. Which instruction is especially important before sending a patient home with HSAT equipment?
Topic: HSAT
A. How to place sensors and what to do if one falls off
B. How to score hypopneas manually
C. How to diagnose narcolepsy
D. How to calculate sleep efficiency from raw data
Reveal answer
Rationale: HSAT depends heavily on patient setup success and clear instructions for troubleshooting at home.
14. Which of the following is the most likely cause of high-frequency artifact across all EEG channels?
Topic: Artifact Recognition
A. Sweat artifact
B. Cardiac artifact
C. Electrode popping
D. Muscle tension
Reveal answer
Rationale: Diffuse high-frequency artifact across EEG channels is most consistent with muscle activity, not sweat drift or cardiac artifact.
15. A patient’s thoracic belt shows effort but the abdominal belt does not. What does this suggest?
Topic: Respiratory Troubleshooting
A. Obstructive apnea
B. Central apnea
C. Normal paradoxical breathing
D. Loose abdominal belt
Reveal answer
Rationale: When one effort channel drops out while the rest of the respiratory picture remains active, a loose or poorly functioning belt should be considered first.
16. Which artifact is most likely when EEG amplitude increases dramatically during sweating?
Topic: Artifact Recognition
A. Electrode popping
B. Low-frequency drift
C. 60-Hz interference
D. High-frequency artifact
Reveal answer
Rationale: Sweat artifact typically appears as a slow rolling baseline sway or low-frequency drift rather than fast interference.
17. Which artifact produces slow, rolling baseline drift?
Topic: Artifact Recognition
A. Muscle artifact
B. Electrode popping
C. Sweat artifact
D. 60-Hz interference
Reveal answer
Rationale: Sweat artifact typically appears as a slow, rolling baseline drift.
18. A patient shows rhythmic EEG deflections synchronized with the ECG R-wave. What is this?
Topic: Artifact Recognition
A. Muscle artifact
B. Cardiac artifact
C. Electrode popping
D. Sweat artifact
Reveal answer
Rationale: EEG activity time-locked to the ECG R-wave is most consistent with cardiac artifact.
19. The appearance of 60 Hz artifact in an EEG channel is most commonly caused by:
Topic: Artifact Recognition
A. High electrode impedance
B. The patient sweating
C. Eye movements
D. Respiration
Reveal answer
Rationale: High impedance and poor grounding increase susceptibility to 60 Hz electrical interference.
20. The primary purpose of a notch filter, usually set at 50 or 60 Hz, is to:
Topic: Filters and Settings
A. Remove low-frequency sweat artifact
B. Block environmental electrical interference from power lines and equipment
C. Enhance the amplitude of sleep spindles
D. Suppress the EKG artifact in the EEG channels
Reveal answer
Rationale: A notch filter is used to suppress environmental line-frequency interference.
10 Glossary Terms
1. Montage
The selected arrangement of recording channels used for a specific sleep study procedure.
2. Impedance
Resistance to electrical signal flow at the electrode-skin interface. Lower, stable impedance generally supports better signal quality.
3. Site preparation
Cleaning and preparing the skin before electrode or sensor application to improve signal quality.
4. Biocalibration
Patient actions used to confirm that recording channels respond appropriately, such as eye movements, teeth clenching, breathing, or limb movements.
5. Artifact
Signal contamination that does not represent the physiologic activity being measured.
6. Sweat artifact
A slow, rolling baseline drift that may appear when sweating affects electrode signal quality.
7. Notch filter
A filter used to suppress environmental line-frequency interference, commonly 50 or 60 Hz depending on location and equipment.
8. HSAT
Home Sleep Apnea Testing, a sleep apnea test performed outside the sleep lab using portable equipment according to protocol.
9. MSLT
Multiple Sleep Latency Test, a daytime test using scheduled nap opportunities to evaluate sleep tendency.
10. MWT
Maintenance of Wakefulness Test, a daytime test used to evaluate the ability to stay awake under protocol conditions.
5 Flip-Style Flashcards
Click each card to reveal the back.
Flashcard 1 Front: What is Domain 2 on the RPSGT blueprint?
Back: Sleep Study Preparation and Performance.
Flashcard 2 Front: What are the three main Domain 2 tasks?
Back: Determine technical preparation; perform procedures and follow practice guidelines; identify, respond, and document.
Flashcard 3 Front: Why is impedance verification important?
Back: It helps confirm electrode contact and supports signal quality.
Flashcard 4 Front: What is an artifact?
Back: Signal contamination that does not represent the physiologic activity being measured.
Flashcard 5 Front: What does PREP, PLACE, PROVE, PERFORM, PROTECT mean?
Back: Prepare equipment, place sensors, prove signal quality, perform the correct procedure, and protect the data through troubleshooting and documentation.
References and Free Review Resources
The following resources are provided so learners can review Domain 2 topics directly from professional and exam-related sources. Always use the most current version of official materials when preparing for an exam or performing clinical work.
BRPT Exam Resources
BRPT RPSGT Exam Blueprint
Used to align this lesson with Domain 2: Sleep Study Preparation and Performance, including Task A, Task B, and Task C.
https://brpt.org/rpsgt/exam-blueprint/
BRPT RPSGT Study Guide
Optional BRPT study resource for exam preparation.
https://brpt.org/rpsgt/exam-prep/study-guide/
AASM Review Resources
AASM Practice Guidelines
Review clinical practice guidelines and guidance statements related to sleep testing, sleep disorders, PAP therapy, pediatric testing, MSLT/MWT, HSAT, and other sleep medicine topics.
https://aasm.org/clinical-resources/practice-standards/practice-guidelines/
AASM Practice Standards Hub
Main AASM page for practice standards, clinical practice guidelines, consensus statements, quality measures, and related resources.
https://aasm.org/clinical-resources/practice-standards/
AASM Scoring Manual
Key reference for sleep staging, respiratory events, arousals, movements, cardiac events, montages, technical specifications, and scoring rules.
https://aasm.org/clinical-resources/scoring-manual/
AASM International Classification of Sleep Disorders
Reference for sleep disorder classification and diagnostic categories.
https://aasm.org/clinical-resources/international-classification-sleep-disorders/
AAST Technical Guidelines
AAST Technical Guidelines for Sleep Technologists
Review technical guidance written for sleep technologists, including PSG, HSAT, patient assessment, CO₂ monitoring, PAP-related topics, and procedure support.
https://aastweb.org/clinical-resources/technical-guidelines/
AAST Standard Polysomnography Guideline
Helpful for reviewing PSG setup, technical performance, recording expectations, and technologist workflow.
Open guideline PDF
AAST Home Sleep Apnea Testing Technical Guideline
Helpful for reviewing HSAT equipment, patient instruction, setup, and technical workflow.
Open guideline PDF
AAST Patient Assessment and Vital Signs Measurement and Documentation
Helpful for reviewing patient assessment, vital signs, and documentation responsibilities.
Open guideline PDF
AAST Split Night Protocols for Adult Patients
Helpful for reviewing split-night study workflow and protocol concepts.
Open guideline PDF
AAST End-Tidal CO₂ and Transcutaneous CO₂ Monitoring Guidelines
Helpful for reviewing capnography and CO₂ monitoring topics listed in Domain 2 Task C.
Review through the AAST Technical Guidelines page
Credit, References, and Educational Disclosure
This educational article was created by Sleep Pathways Guild for RPSGT study support, sleep technology education, and career-pathway awareness for learners exploring sleep technology credentials. It is intended for general educational review only.
The Domain 2 organization and task labels are based on the publicly available BRPT RPSGT Exam Blueprint. The practice questions in this post are adapted from the Sleep Pathways Guild internal RPSGT question-bank inventory and edited for public educational review.
No official BRPT exam questions are reproduced in this article. These practice questions are not actual exam questions and should not be treated as a prediction of exam content.
Because Sleep Pathways Guild is actively reviewing and improving its question bank, questions should be checked for accuracy, source alignment, wording quality, and current guideline alignment before being used in readiness exams, mock exams, or high-stakes assessment.
BRPT, RPSGT, CPSGT, AASM, and AAST names are referenced for educational citation, source identification, and career-pathway awareness only. Sleep Pathways Guild is not affiliated with, endorsed by, sponsored by, or officially connected to BRPT, AASM, or AAST. All trademarks, organization names, credential names, manuals, and guideline titles belong to their respective owners.
Links to BRPT, AASM, and AAST resources are included so learners can study directly from professional sources. Learners should always check the original source websites for the most current exam blueprint, scoring rules, practice guidelines, technical guidelines, eligibility requirements, credential requirements, and policy updates.
This article does not replace official exam materials, the AASM Scoring Manual, facility policy, manufacturer instructions, clinical judgment, provider orders, accreditation requirements, or applicable laws and regulations. In clinical practice, always follow your facility’s approved policies, supervising provider instructions, and current professional standards.
Financial disclosure: This post contains educational links to outside professional resources. Unless otherwise stated, Sleep Pathways Guild receives no payment, sponsorship, affiliate commission, or endorsement from BRPT, AASM, or AAST for including these links.
AI/content disclosure: This educational draft may have been prepared with AI-assisted writing support and reviewed/edited for sleep technology education purposes before posting.
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