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COPD patients experience poorer sleep quality and lower blood oxygen levels
Date:9/20/2012

e outlined in full in the paper.

Key findings of the study included:

  • Patients with severe COPD experienced poorer sleep quality than people without COPD of a similar age.
  • Daytime hypoxemia (low arterial blood oxygen levels) is associated with sleep efficiency, but airflow obstruction is not. Hypoxemia is thought to impact on certain neurotransmitter levels and these mechanisms can contribute to poor sleep efficiency.
  • COPD patients took longer to fall asleep than the age-matched controls after the lights had been turned off (sleep latency) and spent less of their time in bed sleeping (sleep efficiency). They also experienced greater differences in the way they slept, with more sleep at the lightest level (stage one) and less at REM (stage five, the deepest level). Slow wave sleep (stages three and four) was reasonably well preserved.

"Our study highlights poor sleep quality in patients with COPD and demonstrates an association between daytime hypoxemia and sleep efficiency," concludes Professor McNicholas.

"However, sleep quality in COPD is determined by several factors and further studies on this topic are necessary to fully evaluate the relationship. This may identify therapeutic interventions that might improve the overall quality of life in COPD patients."


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Contact: Amy Molnar
sciencenewsroom@wiley.com
Wiley
Source:Eurekalert

Page: 1 2

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