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Int J Sports Med 2002; 23(5): 329-335
DOI: 10.1055/s-2002-33144
Physiology and Biochemistry
© Georg Thieme Verlag Stuttgart · New York

Oxygen Saturation Course and Altitude Symptomatology During an Expedition to Broad Peak (8047 m)

M.  Tannheimer1 , A.  Thomas2 , H.  Gerngroß1
  • 1Bundeswehrkrankenhaus Ulm Department of Surgery, Ulm, Germany
  • 2Bundeswehrzentralkrankenhaus Koblenz Department of Anesthesiology, Koblenz, Germany
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Publication History



Accepted after revision: 10. November 2001

Publication Date:
16 August 2002 (online)

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Abstract

Thirteen healthy European mountaineers (11 male, 2 female) participated in the 62-day German-Pakistani Research Expedition to Broad Peak (8047 m) in the Karakorum, Pakistan. During ascent, base camp stay and approach to the summit, oxygen saturation was measured by pulse oximetry at rest, during exercise and during sleep; in addition, questionnaires on high altitude symptomatic had to be answered. We found a dramatic decrease in oxygen saturation especially at extreme altitudes (7100 m: Median 63 %, Min 59 %, Max 65 %) and a long time required for real acclimatization. The lowest figures at 4850 m were found during maximal exercise, 77.5 % (69 - 85 %) and during sleep, 81 % (73 - 88 %), the highest ones at rest, 86.5 % (77 - 89 %). There was a significant correlation (Spearman rank correlation coefficient with ties) between measured oxygen saturation during the ascent to/stay at base camp and high altitude illness (p = 0.005 - 0.05), as well as with high altitude performance (p = 0.025 - 0.01). The limiting values of “no high altitude symptomatic”, “high altitude discomfort”, AMS and the malignant forms could be estimated for acclimatized (>90 %/>80 %/>70 %/<70 %) and unacclimatized (>80 %/>70 %/>65 %/<65 %) condition. Pulse oximetry is an objective non-invasive method of measurement that is easy to handle. It is a suitable device besides clinical examination and questionnaire-test in the diagnosis of high altitude illness even in the hands of non-professionals. The measurement at sleep can possibly explain present high altitude symptomatic despite of (nearly) normal oxygen saturation values at rest.

Key words

Hypoxia - high altitude - mountain sickness - pulse oximetry

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Dr. M. Tannheimer

Chirurgische Abteilung des Bundeswehrkrankenhauses Ulm

Oberer Eselsberg 40 · 89081 Ulm · Germany ·

Phone: +49 (731) 1710 1201

Fax: +49 (731) 553100

Email: markus.tannheimer@arcormail.de

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