Chest
Clinical InvestigationsSleep And BreathingHome Oximetry Studies for Diagnosis of Sleep Apnea/Hypopnea Syndrome: Limitation of Memory Storage Capabilities
Section snippets
Patients
One hundred consecutive patients were studied. They were referred from ear, nose, and throat surgeons, primary-care physicians, and other chest physicians for assessment of suspected SAHS using full polysomnography. All completed an Epworth Sleepiness Score (ESS).8
Pulse Oximeter
The oximeters used in this study were the Biox 3740 (Ohmeda; UK). For the home and laboratory studies, the oximeters were identical, including the software version (version 9) and the default settings. Signal averaging defaulted to 6
Results
All subjects completed the studies without difficulty. None of the subjects consumed alcohol on either of the study nights.
Discussion
The results of this study show that home oximetry studies using the oximeters used in this study in patients with suspected SAHS significantly underestimate the number of episodes of hypoxemia during sleep, and may therefore miss more clinically significant SAHS than oximeter studies analyzed on-line in the hospital. The results suggest that this is due to the memory capability of the oximeter, in that a data point is stored every 12 s as compared to every 2 s when recordings are made on-line
References (24)
- et al.
Screening for sleep apnea using pulse oximetry and a clinical score
Chest
(1991) - et al.
Clinical value of polysomnography
Lancet
(1992) - et al.
Cost-effectiveness analysis of nocturnal oximetry as a method of screening for sleep apnea-hypopnea syndrome
Chest
(1998) - Royal College of Physicians. Sleep apnea and related conditions: a report of a working party of the Royal College of...
- et al.
Quantification of sleep disordered breathing by computerized analysis of oximetry, heart rate and snoring
Eur Respir J
(1991) - et al.
Utility of nocturnal home oximetry for case finding in patients with suspected sleep apnea hypopnea syndrome
Ann Intern Med
(1993) - et al.
A comparison of clinical assessment and home oximetry in the diagnosis of obstructive sleep apnea
Am Rev Respir Dis
(1993) - et al.
Evaluation of the Ohmeda 3700 pulse oximeter
Thorax
(1987) A new method of measuring daytime sleepiness: the Epworth Sleepiness Scale
Sleep
(1991)
Monitoring and staging human sleep
Minitab
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