Extreme altitude-induced central sleep apneas lasting more than 100 seconds in a healthy 23-year-old man.

Central sleep apneas (CSA) can occur de novo at high-altitude in individuals without sleep-disordered breathing at low altitude. These apneas are usually brief, lasting only 5-15 s. This report presents the first documented case of a man experiencing extreme altitude-induced CSA lasting more than 100 s in the absence of any sleep breathing disorder in normoxia.

Periodic leg movements during sleep and cognitive functioning in the older general population.

Objective: The current evidence of a relationship between periodic leg movements during sleep (PLMS) and cognitive functioning is limited and inconsistent. This cross-sectional study assessed associations between PLMS and cognitive functioning among community-dwelling older adults.

Methods: We included community-dwelling older adults who underwent a polysomnography and a cognitive assessment.