RPSGT RPSGT Sleep Disorders & Pathophysiology

Question 1

Which sleep disorder is characterized by recurrent episodes of partial or complete upper airway obstruction during sleep?

Accepted Answer

Obstructive sleep apnea

Answer

Obstructive sleep apnea is defined by recurrent upper airway collapse during sleep, causing apneas and hypopneas despite continued respiratory effort.

Question 2

What is the minimum AHI threshold for diagnosing moderate obstructive sleep apnea per AASM criteria?

Accepted Answer

15 events/hour

Answer

Moderate OSA is defined as an AHI of 15–29 events per hour per AASM classification guidelines.

Question 3

Narcolepsy type 1 is distinguished from narcolepsy type 2 primarily by the presence of:

Accepted Answer

Cataplexy

Answer

Narcolepsy type 1 is defined by cataplexy and/or low CSF hypocretin-1 levels, which are absent in narcolepsy type 2.

Question 4

Which condition is characterized by an irresistible urge to move the legs, typically worse at rest and in the evening?

Accepted Answer

Restless legs syndrome

Answer

Restless legs syndrome features an uncomfortable sensorimotor urge to move the legs that worsens at rest and is relieved by movement.

Question 5

Central sleep apnea with Cheyne-Stokes breathing is most commonly associated with which underlying condition?

Accepted Answer

Congestive heart failure

Answer

Central sleep apnea with Cheyne-Stokes breathing is most commonly seen in patients with congestive heart failure due to impaired ventilatory control.

RPSGT Exam Practice Test

RPSGT Exam Practice Test

RPSGT RPSGT Sleep Disorders & Pathophysiology