Respiratory and spontaneous arousals in patients with sleep apnea hypopnea syndrome
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Sleep in patients with Sleep Apnea-Hypopnea Syndrome (SAHS) is frequently interrupted with arousals. Increased amounts of arousals result in shortening total sleep time and repeated sleep-arousal change can result in sleep fragmentation. According to the American Sleep Disorders Association (ASDA) an arousal is a marker of sleep disruption representing a detrimental and harmful feature for sleep. The nature of arousals and its role on the regulation of the sleep process raises controversy and has sparked the debate in the last years. In this work, we analyzed and compared the EEG spectral content of respiratory and spontaneous arousals on a database of 45 SAHS subjects. A total of 3980 arousals (1996 respiratory and 1984 spontaneous) were analyzed. The results showed no differences between the spectral content of the two kinds of arousals. Our findings raise doubt as to whether these two kinds of arousals are truly triggered by different organic mechanisms. Furthermore, they may also challenge the current beliefs regarding the underestimation of the importance of spontaneous arousals and their contribution to sleep fragmentation in patients suffering from SAHS.
CitacióGil, J. [et al.]. Respiratory and spontaneous arousals in patients with sleep apnea hypopnea syndrome. A: IEEE Engineering in Medicine and Biology Society. "34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society: 28 August-1 September, 2012 San Diego, CA USA". San Diego, CA: Institute of Electrical and Electronics Engineers (IEEE), 2012, p. 6337-6340.
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