In obstructive sleep apnea, leg movements during sleep that disturb a partner are most consistent with which condition?

In obstructive sleep apnea, leg movements during sleep that disturb a partner are most consistent with which condition?

• A. Obstructive sleep apnea
• B. Central sleep apnea
• C. Cheyne-Stokes breathing
• D. PLMS

Answer: (D)

Periodic limb movements in sleep. These are repetitive, rhythmic leg movements that occur during sleep (often involving the toes, feet, or legs) and can cause brief arousals or disturb a bed partner. They are a separate phenomenon from the breathing events of obstructive sleep apnea, which are due to airway obstruction rather than limb movements. Central sleep apnea involves an absence of respiratory effort, not rhythmic leg movements, and Cheyne-Stokes breathing is a particular breathing pattern seen with certain central sleep conditions. So leg movements disturbing a partner in someone with sleep apnea point to periodic limb movements in sleep.

Periodic limb movements in sleep. These are repetitive, rhythmic leg movements that occur during sleep (often involving the toes, feet, or legs) and can cause brief arousals or disturb a bed partner. They are a separate phenomenon from the breathing events of obstructive sleep apnea, which are due to airway obstruction rather than limb movements. Central sleep apnea involves an absence of respiratory effort, not rhythmic leg movements, and Cheyne-Stokes breathing is a particular breathing pattern seen with certain central sleep conditions. So leg movements disturbing a partner in someone with sleep apnea point to periodic limb movements in sleep.