title: Consistency of respiratory measurements from night to night during the sleep of elderly men.
abstract: Fourteen healthy elderly men had polysomnography performed on two consecutive nights to assess the consistency of sleep and breathing from night to night. The reported first-night effect was seen on electroencephalographic sleep, leading to lighter or fitful sleep on the first night. Mean values for apneas, hypopneas, and oxygen desaturations did not change from night 1 to night 2. Five of 14 subjects would have changed classification from night to night if a cutoff of five apneas and hypopneas per hour were used to define normality. Because this numerical cutoff may not be valid in the elderly, the clinical significance of such a changing classification is not clear.
authors: Department of Medicine, University of Florida College of Medicine, Gainesville.
authors: W R
authors: WR
authors: Aber
authors: A J
authors: AJ
authors: Block
authors: D W
authors: DW
authors: Hellard
authors: W B
authors: WB
authors: Webb
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D004569:Electroencephalography; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D015203:Reproducibility of Results; D012119:Respiration / Q000502:physiology*; D012890:Sleep / Q000502:physiology*; D012891:Sleep Apnea Syndromes / Q000175:diagnosis