Soru

Zorluk: OrtaSleep-Wake Disorders

Match each clinical presentation to the most accurate sleep-wake disorder diagnosis.

  • Narcolepsy Type 1A 22-year-old woman with excessive daytime sleepiness and sudden, brief episodes of bilateral facial and limb weakness triggered by hearing a joke.
  • REM Sleep Behavior DisorderA 65-year-old man who frequently punches and yells during sleep, often waking up to vividly recall defending himself from attackers.
  • Non-REM Sleep Arousal DisorderA 5-year-old boy who abruptly sits up in bed screaming with tachycardia, is unarousable by his parents, and has no memory of the event the next day.
  • Delayed Sleep-Wake Phase DisorderA 19-year-old college student who consistently cannot fall asleep before 3:00 AM, struggles with morning classes, but sleeps restfully for 8 hours on weekends.

Cevap

Narcolepsy Type 1 matches with the young woman experiencing cataplexy; REM Sleep Behavior Disorder matches with the older man enacting vivid dreams; Non-REM Sleep Arousal Disorder matches with the young child having sleep terrors with amnesia; and Delayed Sleep-Wake Phase Disorder matches with the college student exhibiting a shifted sleep schedule.
Each clinical vignette provides pathognomonic features for specific sleep-wake disorders. Narcolepsy type 1 is defined by cataplexy and sleepiness. REM sleep behavior disorder is characterized by dream enactment due to absent REM atonia. Non-REM sleep arousal disorder (sleep terrors) presents with profound autonomic arousal and amnesia for the episode. Delayed sleep-wake phase disorder involves a shifted but otherwise normal circadian sleep pattern.

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1
Analyze the young woman's presentation.
She presents with chronic sleepiness and emotion-triggered muscle weakness.
These are the classic signs of hypersomnolence and cataplexy, pointing directly to Narcolepsy Type 1.
2
Evaluate the older man's nocturnal behaviors.
He exhibits physical actions during sleep and vividly remembers dreaming.
This indicates a failure of the normal muscle paralysis (atonia) that should occur during REM sleep, diagnosing REM Sleep Behavior Disorder.
3
Assess the pediatric patient's nighttime awakenings.
The child wakes up terrified, cannot be consoled, and does not remember the event.
These features distinguish Non-REM sleep terrors (occurring in slow-wave sleep without dream recall) from typical nightmares.
4
Review the college student's sleep schedule.
The patient has a severely delayed sleep onset but normal sleep duration when allowed to sleep in.
This pattern is a circadian rhythm misalignment known as Delayed Sleep-Wake Phase Disorder.

Anahtar Kavram

Clinical differentiation of major sleep-wake disorders based on symptomatology, sleep cycle stage, and patient demographics.
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