Chest
Original ResearchSleep MedicineDiagnosis of Obstructive Sleep Apnea Syndrome and Its Outcomes With Home Portable Monitoring
Section snippets
Research Subjects
Consecutive patients > 18 years of age who were referred for evaluation of suspected OSAS were invited to participate in the study if they signed the informed consent form. Pregnant women, patients with severe comorbidities (cancer, heart failure, etc) or difficulties that would interfere with the examinations, and patients residing outside the metropolitan area of Porto Alegre (Rio Grande do Sul, Brazil) were excluded. This study was approved by the Ethics Committee of our institution.
Study Protocol
The
Results
Two hundred and twenty patients were invited to participate in the study between November 2004 and August 2006. One hundred and sixty-three consented, and 157 underwent PSG and were included in the analysis. Figure 1 shows a diagram of the subject recruitment flow. The 57 patients who did not consent to participate in the study were similar to the analyzed population in terms of age, gender, body mass index (BMI), and BP.
Data from the lab-PM were lost for eight (6%) subjects as follows: six had
Discussion
In this study, a type 3 PM was tested for its ability to diagnose OSAS at home and was simultaneously validated against the laboratory “gold standard” in a large sample of patients with clinically suspected OSAS, which represents the spectrum seen in clinical practice. The order of the examinations done in the laboratory or at home was randomly assigned. The results show that the accuracy of home-PM compared with PSG is within the limits usually seen when two diagnostic tools are compared. Our
Conclusions
After being validated at the laboratory against full PSG, the diagnostic performance of a type 3 PM for detecting OSAS at home is within acceptable limits for diagnostic tests. The agreement of home-PM with PSG is similar to that described between two typical PSG studies. These results suggest that the availability of PM will increase the possibility of correctly diagnosing and effectively treating sleep breathing disorders in populations worldwide.
References (40)
- et al.
Evaluation of type 3 portable monitoring in unattended home setting for suspected sleep apnea: factors that may affect its accuracy
Otolaryngol Head Neck Surg
(2006) - et al.
Comparison of the NovaSom QSG, a new sleep apnea home-diagnostic system, and polysomnography
Sleep Med
(2003) - et al.
Obstructive sleep apnea and resistant hypertension: a case-control study
Chest
(2007) - et al.
Respiratory polygraphy with actigraphy in the diagnosis of sleep apnea-hypopnea syndrome
Chest
(2007) - et al.
Choice of oximeter affects apnea-hypopnea index
Chest
(2005) Scoring variability between polysomnography technologists in different sleep laboratories
Sleep Med
(2002)- et al.
Effect of sleep position on sleep apnea and parafunctional activity
Chest
(1986) - et al.
Consistency of respiratory measurements from night to night during the sleep of elderly men
Chest
(1989) - et al.
Validation study of a polygrafic screening device (BREAS SC20) in the diagnosis of sleep apnea-hypopnea syndrome
Arch Bronconeumol
(2003) - et al.
Polysomnography performed in the unattended home versus the attended laboratory setting: Sleep Heart Health Study methodology
Sleep
(2004)
Assessment of accuracy and analysis time of a novel device to monitor sleep and breathing in the home
Sleep
The diagnosis of sleep apnea: questionnaires and home studies
Sleep
Use of wrist activity for monitoring sleep/wake in demented nursing-home patients
Sleep
Utility of home oximetry as a screening test for patients with moderate to severe symptoms of obstructive sleep apnea
Sleep
Validation a portable monitoring device for sleep apnea diagnosis in a population based cohort using synchronized home polysomnography
Sleep
Validation of a new system of tracheal sound analysis for the diagnosis of sleep apnea-hypopnea syndrome
Sleep
Utility of actigraphy in the diagnosis of obstructive sleep apnea
Sleep
The indications for polysomnography and related procedures
Sleep
Full polysomnography in the home
Sleep
Executive summary on the systematic review and practice parameters for portable monitoring in the investigation of suspected sleep apnea in adults
Am J Respir Crit Care Med
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Financial support was granted by the Brazilian government through a research incentive fund (FIPE) of the Hospital de Clinicas de Porto Alegre.
No conflict of interest exists for any of the authors.
Reproduction of this article is prohibited without written permission from the American College of Chest Physicians (www.chestjournal.org/misc/reprints.shtml).