Research articleDynamics of periodic breathing and arousal during sleep at extreme altitude
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Periodic breathing and oxygen supplementation in Chilean miners at high altitude (4200 m)
2015, Respiratory Physiology and NeurobiologyCitation Excerpt :This evidence supports the idea that miners with CIHH have a level of acclimatization, since they have a reduction in the τe represented by a minor time spent in periodic breathing (Khoo et al., 1982; West et al., 1986). Furthermore, our results confirm previous studies showing the relationship between periodic breathing and the level of altitude (hypoxia) that triggers instability in the control of ventilation during sleep (Lahiri et al., 1983; Berssenbrugge et al., 1983; Khoo et al., 1982, 1996; Erba et al., 2004; Bloch et al., 2010; Rodway et al., 2012). This pattern of instability is supported in our study by a mean value of ‘Duty Ratio’ <1 (0.49 ± 0.03).
Sleep disturbances in long-term immigrants with chronic mountain sickness: A comparison with healthy immigrants at high altitude
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2013, Respiratory Physiology and NeurobiologyCitation Excerpt :One is drawn to conclude that the cyclical changes in CBF may be more important than repeated arousal from sleep in perpetuating CSA at high altitude. Since arousals without a clear temporal relationship to periodic breathing cycles during sleep have also been reported (Khoo et al., 1996; Nussbaumer-Ochsner et al., 2012b), it seems likely that periodic breathing does not always cause arousal, and is not the only cause of arousals and fragmented sleep at altitude. Fig. 12 summarizes the various mechanisms that have been outlined by which high-altitude exposure leads to the development of periodic breathing during sleep.
Tonic and phasic drive to medullary respiratory neurons during periodic breathing
2012, Respiratory Physiology and NeurobiologyCitation Excerpt :Periodic breathing is commonly observed in sojourners at high altitudes during sleep and in patients with heart disease or sleep apnea (Berssenbrugge et al., 1983; Dempsey et al., 2010; Khoo et al., 1996; Weil, 2004).