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  • Title: Correlation between raised body temperature and acute mountain sickness score at moderate altitude.
    Author: Röggla G, Moser B, Wagner A, Röggla M.
    Journal: Wien Klin Wochenschr; 2000 Mar 24; 112(6):290-2. PubMed ID: 10815305.
    Abstract:
    UNLABELLED: In high altitude mountaineering, a rise in body temperature has long been associated with acute mountain sickness. No data exist on the situation at moderate altitudes in the Austrian Alps. The objective of this study was to investigate a potential relationship between an increase in body temperature and acute mountain sickness (AMS) and hypoxemia at moderate altitude. Body temperature and arterial oxygen saturation (SaO2) were measured in 40 alpinists at 1000 m altitude and after ascent to 3100 m altitude, and the AMS score was measured at 3100 m altitude. At 3100 m altitude, 3 alpinists with AMS (score 3) experienced a 0.87 +/- 0.12 degree C rise in body temperature and a 10.67 +/- 1.15% reduction in SaO2. In 8 moderately affected alpinists, temperature increased by 0.49 +/- 0.16 degree C and SaO2 was reduced by 6.75 +/- 1.75%. In 29 alpinists without signs of AMS, temperature did not change (difference 0.02 +/- 0.14 degree C) and SaO2 decreased by 4.59 +/- 0.82%. The difference between temperatures at the two altitudes correlated significantly with the SaO2 difference between the two altitudes (rs = 0.408, p < 0.01) and with the AMS scores (rs = 0.814, p < 0.01). CONCLUSION: Comparable with maximal forms of AMS at high altitude, our data provide reason to speculate that systemic inflammatory disease could also be causal in less severe forms of acute mountain sickness. Therefore, in cases of fever at moderate altitude, the differential diagnosis must include acute mountain sickness.
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