Polygraphy of Sleep at Altitudes Between 5300m and 7500m During an Expedition to Mt. Everest (MedEx 2006) Klaus Mees, PhD, MD, Richard de la Chaux, MD

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Presentation transcript:

Polygraphy of Sleep at Altitudes Between 5300m and 7500m During an Expedition to Mt. Everest (MedEx 2006) Klaus Mees, PhD, MD, Richard de la Chaux, MD Wilderness & Environmental Medicine Volume 20, Issue 2, Pages 161-165 (June 2009) DOI: 10.1580/08-WEME-BR-187R2.1 Copyright © 2009 Wilderness Medical Society Terms and Conditions

Figure 1 Equipment as worn by climber after all sensors and the head-box have been fixed and the data recorder (Alpha Screen) programmed to activate. Wilderness & Environmental Medicine 2009 20, 161-165DOI: (10.1580/08-WEME-BR-187R2.1) Copyright © 2009 Wilderness Medical Society Terms and Conditions

Figure 2 Picture of the author's ascent route to Mt. Everest via Khumbu Ice Fall showing the location of Base Camp and High Camps. Wilderness & Environmental Medicine 2009 20, 161-165DOI: (10.1580/08-WEME-BR-187R2.1) Copyright © 2009 Wilderness Medical Society Terms and Conditions

Figure 3 Indices of disturbed nocturnal breathing at different altitudes and on different days (AI indicates Apnea-Index; HI, Hypopnea-Index; AHI, Apnea-Hypopnea-Index). Wilderness & Environmental Medicine 2009 20, 161-165DOI: (10.1580/08-WEME-BR-187R2.1) Copyright © 2009 Wilderness Medical Society Terms and Conditions

Figure 4 Basal (mean) oxygen saturation and minimal oxygen saturation. Wilderness & Environmental Medicine 2009 20, 161-165DOI: (10.1580/08-WEME-BR-187R2.1) Copyright © 2009 Wilderness Medical Society Terms and Conditions

Figure 5 The ratio of disturbed to undisturbed nocturnal breathing. Wilderness & Environmental Medicine 2009 20, 161-165DOI: (10.1580/08-WEME-BR-187R2.1) Copyright © 2009 Wilderness Medical Society Terms and Conditions