Certification In Clinical Sleep Health (CCSH) Practice Exam

Which acronym specifically refers to periodic limb movements that occur during sleep?

Periodic Limb Movement Disorder Periodic Leg Movement in Sleep Periodic Limb Movements Periodic Limb Movements in Sleep

Correct Answer:

Periodic Limb Movements in Sleep

Explanation:

Movements that happen specifically during sleep are described with the term Periodic Limb Movements in Sleep, abbreviated PLMS. The phrase “in Sleep” sets the context as nocturnal phenomena observed during sleep studies, which is how this pattern is distinguished in sleep medicine. The other options either refer to the disorder rather than the movements, use nonstandard wording, or omit the sleep setting, making them less precise. So, Periodic Limb Movements in Sleep is the canonical term and the correct acronym.

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