Consistency of respiratory measurements from night to night during the sleep of elderly men

Chest. 1989 Oct;96(4):747-51. doi: 10.1378/chest.96.4.747.


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.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Aging / physiology*
  • Electroencephalography
  • Humans
  • Male
  • Middle Aged
  • Monitoring, Physiologic
  • Reproducibility of Results
  • Respiration / physiology*
  • Sleep / physiology*
  • Sleep Apnea Syndromes / diagnosis