RPSGT
Domain 2: Sleep Study Preparation &
Performance
Final Assessment Review
(With Solutions)
2026
1
,Multiple Choice (MCQ)
A patient scheduled for a full-night polysomnogram has thick, oily
hair that prohibits proper electrode adhesion. Which is the best
preparation technique before electrode placement?
a) Use alcohol to clean the scalp only
b) Wash hair with mild shampoo and dry thoroughly
c) Shave the scalp areas for electrode placement
d) Apply electrode gel without cleaning
Answer: b) Wash hair with mild shampoo and dry thoroughly
Rationale: Removing oils and dirt improves electrode adhesion, and
shampooing is recommended; shaving is generally avoided unless
necessary.
During the montage setup, an EEG lead shows consistently high
impedance above 20 kΩ despite preparation attempts. What is the
best course of action?
a) Proceed with the study and note the lead limitation
b) Re-prepare the site and replace the electrode
c) Replace the amplifier
d) Ignore and adjust signal gain later
Answer: b) Re-prepare the site and replace the electrode
Rationale: High impedance compromises signal quality; re-
preparation and electrode replacement are essential to ensure data
validity.
In accordance with AASM guidelines, which of the following is the
most crucial step before starting an attended sleep study?
a) Confirm patient identification and clinical indications
b) Place all sensors without patient interaction
c) Begin recording immediately after electrode placement
d) Administer sedative medication for patient comfort
Answer: a) Confirm patient identification and clinical indications
Rationale: Patient safety and correct procedure depend on proper
identification and understanding of clinical needs.
2
, A patient reports claustrophobia and anxiety before their sleep study.
Which intervention is most appropriate during technical preparation?
a) Ignore patient complaints and proceed
b) Offer a detailed explanation of the procedure and attempt
relaxation techniques
c) Cancel the study immediately
d) Administer sedatives without physician order
Answer: b) Offer a detailed explanation of the procedure and attempt
relaxation techniques
Rationale: Patient education and reassurance help reduce anxiety
without compromising safety.
What is the ideal impedance level for EEG electrodes before starting
the recording?
a) Less than 5 kΩ
b) Less than 20 kΩ
c) Less than 50 kΩ
d) No specific impedance requirement
Answer: b) Less than 20 kΩ
Rationale: Impedance below 20 kΩ ensures quality signals and
reduces artifacts per AASM standards.
True / False
True or False: Patient movement artifacts can be minimized by
ensuring adequate electrode adhesion and comfortable positioning
before recording.
Answer: True
Rationale: Secure electrodes and comfortable positioning reduce
movement and artifacts.
True or False: If a technical issue arises during the study, it is
acceptable to reset the equipment without informing the patient.
Answer: False
Rationale: Patient awareness is important for safety and informed
3
Domain 2: Sleep Study Preparation &
Performance
Final Assessment Review
(With Solutions)
2026
1
,Multiple Choice (MCQ)
A patient scheduled for a full-night polysomnogram has thick, oily
hair that prohibits proper electrode adhesion. Which is the best
preparation technique before electrode placement?
a) Use alcohol to clean the scalp only
b) Wash hair with mild shampoo and dry thoroughly
c) Shave the scalp areas for electrode placement
d) Apply electrode gel without cleaning
Answer: b) Wash hair with mild shampoo and dry thoroughly
Rationale: Removing oils and dirt improves electrode adhesion, and
shampooing is recommended; shaving is generally avoided unless
necessary.
During the montage setup, an EEG lead shows consistently high
impedance above 20 kΩ despite preparation attempts. What is the
best course of action?
a) Proceed with the study and note the lead limitation
b) Re-prepare the site and replace the electrode
c) Replace the amplifier
d) Ignore and adjust signal gain later
Answer: b) Re-prepare the site and replace the electrode
Rationale: High impedance compromises signal quality; re-
preparation and electrode replacement are essential to ensure data
validity.
In accordance with AASM guidelines, which of the following is the
most crucial step before starting an attended sleep study?
a) Confirm patient identification and clinical indications
b) Place all sensors without patient interaction
c) Begin recording immediately after electrode placement
d) Administer sedative medication for patient comfort
Answer: a) Confirm patient identification and clinical indications
Rationale: Patient safety and correct procedure depend on proper
identification and understanding of clinical needs.
2
, A patient reports claustrophobia and anxiety before their sleep study.
Which intervention is most appropriate during technical preparation?
a) Ignore patient complaints and proceed
b) Offer a detailed explanation of the procedure and attempt
relaxation techniques
c) Cancel the study immediately
d) Administer sedatives without physician order
Answer: b) Offer a detailed explanation of the procedure and attempt
relaxation techniques
Rationale: Patient education and reassurance help reduce anxiety
without compromising safety.
What is the ideal impedance level for EEG electrodes before starting
the recording?
a) Less than 5 kΩ
b) Less than 20 kΩ
c) Less than 50 kΩ
d) No specific impedance requirement
Answer: b) Less than 20 kΩ
Rationale: Impedance below 20 kΩ ensures quality signals and
reduces artifacts per AASM standards.
True / False
True or False: Patient movement artifacts can be minimized by
ensuring adequate electrode adhesion and comfortable positioning
before recording.
Answer: True
Rationale: Secure electrodes and comfortable positioning reduce
movement and artifacts.
True or False: If a technical issue arises during the study, it is
acceptable to reset the equipment without informing the patient.
Answer: False
Rationale: Patient awareness is important for safety and informed
3
