S L E E P M E D I C I N E P R O F E S S I O N A L C E R T I F I C AT I O N
RPSGT Exam
Practice Question Bank
AASM-Compliant Practice Questions with Rationales
Topic Focus: Polysomnography — Comprehensive Review
Edition 1 · July 2026
Table of Contents
1. Instructions for Use 2
2. Practice Questions with Answers & Rationales — RPSGT Exam 2
RPSGT Exam Review Page 1
,RPSGT EXAM REVIEW INSTRUCTIONS & PRACTICE QUESTIONS
How to Use This Guide
Read each stem, choose your answer, then check the rationale directly below it. The correct
option is marked, and each wrong option is explained so you understand why it's wrong — not
just that it is. Each question is derived directly from RPSGT exam content and formatted in
exam style.
Category: Polysomnography — Comprehensive Review
1 Premature Atrial Contractions (PACs) are characterized by:
A An aberrant P wave associated with a beat occurring earlier than expected
B A wide, bizarre QRS complex occurring earlier than expected
C A prolonged PR interval
D A missing P wave
Why A is correct: PACs are characterized by an aberrant P wave associated with a beat
occurring earlier than expected.
B — Wide bizarre QRS describes PVCs.
C — Prolonged PR is first-degree AV block.
D — Missing P wave describes junctional rhythms.
,2 Sinus Bradycardia is defined as:
A Normal sinus rhythm with a rate less than 40 bpm
B Normal sinus rhythm with a rate greater than 100 bpm
C Irregular rhythm with a rate of 60-100 bpm
D Absence of P waves with a rate less than 40 bpm
Why A is correct: Sinus bradycardia is normal sinus rhythm except the rate is too slow (less
than 40 bpm).
B — Rate greater than 100 bpm is tachycardia.
C — Irregular rhythm is not sinus bradycardia.
D — Absence of P waves is not sinus rhythm.
3 Atrial Tachycardia is characterized by:
A Rate greater than 90 bpm with a regular rhythm
B Irregularly irregular rhythm
C Rate less than 60 bpm
D Sawtooth appearance
Why A is correct: Atrial tachycardia is characterized by a rate greater than 90 bpm with a
regular rhythm.
B — Irregularly irregular is atrial fibrillation.
C — Rate less than 60 is bradycardia.
D — Sawtooth appearance is atrial flutter.
, 4 Sinus Arrhythmia is characterized by:
A Heart rate increases with inhalation and slows with exhalation, mediated by vagus
nerve stimulation
B Heart rate decreases with inhalation and increases with exhalation
C A constant heart rate regardless of respiration
D Absence of P waves
Why A is correct: Sinus arrhythmia is characterized by heart rate increasing with inhalation
and slowing with exhalation, mediated by vagus nerve stimulation.
B — The pattern is reversed.
C — Sinus arrhythmia varies with respiration.
D — P waves are present.
5 Sinus pauses (Asystole) are characterized by:
A Abrupt absence of P wave and QRS complex lasting longer than 3 seconds
B Abrupt absence of P wave with QRS present
C Prolonged PR interval
D Wide QRS complexes
Why A is correct: Sinus pauses are an abrupt absence of both P wave and QRS complex
lasting longer than 3 seconds.
B — Absence of P with QRS would be junctional.
C — Prolonged PR is first-degree block.
D — Wide QRS describes ventricular rhythms.
RPSGT Exam
Practice Question Bank
AASM-Compliant Practice Questions with Rationales
Topic Focus: Polysomnography — Comprehensive Review
Edition 1 · July 2026
Table of Contents
1. Instructions for Use 2
2. Practice Questions with Answers & Rationales — RPSGT Exam 2
RPSGT Exam Review Page 1
,RPSGT EXAM REVIEW INSTRUCTIONS & PRACTICE QUESTIONS
How to Use This Guide
Read each stem, choose your answer, then check the rationale directly below it. The correct
option is marked, and each wrong option is explained so you understand why it's wrong — not
just that it is. Each question is derived directly from RPSGT exam content and formatted in
exam style.
Category: Polysomnography — Comprehensive Review
1 Premature Atrial Contractions (PACs) are characterized by:
A An aberrant P wave associated with a beat occurring earlier than expected
B A wide, bizarre QRS complex occurring earlier than expected
C A prolonged PR interval
D A missing P wave
Why A is correct: PACs are characterized by an aberrant P wave associated with a beat
occurring earlier than expected.
B — Wide bizarre QRS describes PVCs.
C — Prolonged PR is first-degree AV block.
D — Missing P wave describes junctional rhythms.
,2 Sinus Bradycardia is defined as:
A Normal sinus rhythm with a rate less than 40 bpm
B Normal sinus rhythm with a rate greater than 100 bpm
C Irregular rhythm with a rate of 60-100 bpm
D Absence of P waves with a rate less than 40 bpm
Why A is correct: Sinus bradycardia is normal sinus rhythm except the rate is too slow (less
than 40 bpm).
B — Rate greater than 100 bpm is tachycardia.
C — Irregular rhythm is not sinus bradycardia.
D — Absence of P waves is not sinus rhythm.
3 Atrial Tachycardia is characterized by:
A Rate greater than 90 bpm with a regular rhythm
B Irregularly irregular rhythm
C Rate less than 60 bpm
D Sawtooth appearance
Why A is correct: Atrial tachycardia is characterized by a rate greater than 90 bpm with a
regular rhythm.
B — Irregularly irregular is atrial fibrillation.
C — Rate less than 60 is bradycardia.
D — Sawtooth appearance is atrial flutter.
, 4 Sinus Arrhythmia is characterized by:
A Heart rate increases with inhalation and slows with exhalation, mediated by vagus
nerve stimulation
B Heart rate decreases with inhalation and increases with exhalation
C A constant heart rate regardless of respiration
D Absence of P waves
Why A is correct: Sinus arrhythmia is characterized by heart rate increasing with inhalation
and slowing with exhalation, mediated by vagus nerve stimulation.
B — The pattern is reversed.
C — Sinus arrhythmia varies with respiration.
D — P waves are present.
5 Sinus pauses (Asystole) are characterized by:
A Abrupt absence of P wave and QRS complex lasting longer than 3 seconds
B Abrupt absence of P wave with QRS present
C Prolonged PR interval
D Wide QRS complexes
Why A is correct: Sinus pauses are an abrupt absence of both P wave and QRS complex
lasting longer than 3 seconds.
B — Absence of P with QRS would be junctional.
C — Prolonged PR is first-degree block.
D — Wide QRS describes ventricular rhythms.
