Is portable monitoring accurate in the diagnosis of obstructive sleep apnea syndrome in chronic pulmonary obstructive disease?

Sleep Med. 2012 Sep;13(8):1033-8. doi: 10.1016/j.sleep.2012.06.011. Epub 2012 Jul 25.


Background: No scientific evidence supports the use of portable devices to diagnose obstructive sleep apnea syndrome (OSAS) in patients with co-morbities. Our aim was to evaluate the accuracy of a portable monitoring device (Stardust - STD) in the detection of patients with chronic obstructive pulmonary disease (COPD).

Methods: Patients with COPD and clinical suspicion of OSAS were recruited for a prospective randomized study. The STD was used on two different nights: (1) at home (STDHome) and (2) at the sleep laboratory simultaneous with polysomnography (PSG-STDLab).

Results: A total of 72 patients underwent the proposed recordings. Forty-six volunteers were excluded due to recording problems, and data from 26 subjects were analyzed. The mean age was (mean±SD) 62.8±8.5 years, 50% were male, and the mean forced expiratory volume in the first second was 55±11%. Significant intraclass correlation was observed between apnea-hypopnea index (AHI)-PSG vs. AHI-STDLab (r=0.61, p<0.0001) and AHI-STDHome (r=0.47, p<0.007). Kappa analysis also showed a significant agreement for severe group.

Conclusion: Despite the agreement found in a small number of patients between AHI, a large number of failures in the recording limits the use of this portable device for the diagnosis of OSAS in patients with COPD.

Publication types

  • Randomized Controlled Trial
  • Validation Study

MeSH terms

  • Aged
  • Female
  • Forced Expiratory Volume
  • Humans
  • Male
  • Middle Aged
  • Monitoring, Ambulatory / instrumentation
  • Monitoring, Ambulatory / methods
  • Monitoring, Ambulatory / standards*
  • Polysomnography / instrumentation
  • Polysomnography / methods
  • Polysomnography / standards*
  • Prospective Studies
  • Pulmonary Disease, Chronic Obstructive / complications*
  • Reproducibility of Results
  • Severity of Illness Index
  • Sleep Apnea, Obstructive / complications*
  • Sleep Apnea, Obstructive / diagnosis*