Chest
Original ResearchRespiratory Polygraphy With Actigraphy in the Diagnosis of Sleep Apnea-Hypopnea Syndrome
Section snippets
Patients
The study group included patients living in the city of Seville, Spain, who were consecutively referred to the sleep laboratory for polysomnography because of suspected SAHS. Exclusion criteria were physical or mental impairment that ruled out the use of the equipment. The following data were collected for all the patients: sex; age; personal history; symptoms of SAHS; body mass index (in kilograms per square millimeter); systolic and diastolic arterial pressure; and results of spirometry and
Results
Three of the 65 patients were excluded from the study, one due to a technical failure involving the polysomnography, and the other two withdrew during the course of the study. In one case, it was necessary to repeat polysomnography and the LRP because the sleep time was < 3 h. The home study had to be repeated in two cases (3%), one due to a technical failure on the transfer of the data to the computer and the other because of the poor quality of the oronasal airflow signal. The recordings
Discussion
The results of the present study show that HRP is a valid method, with a high sensitivity and specificity for the diagnosis of SAHS, after comparing it with standard polysomnography. The diagnostic accuracy of HRP was only slightly lower than that of LRP. Moreover, in our study, the interobserver reliability in the analysis of the RP recordings was very high. On the other hand, in the case of the AP-II, wrist actigraphy contributed little to improving the efficacy of RP.
In the validation
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The authors have reported to the ACCP that no significant conflicts of interest exist with any companies/organizations whose products or services may be discussed in this article.