Effects of acetazolamide on pulmonary artery pressure and prevention of high-altitude pulmonary edema after rapid active ascent to 4,559 m

Author:

Berger Marc Moritz1ORCID,Sareban Mahdi23,Schiefer Lisa Maria4,Swenson Kai E.5,Treff Franziska4,Schäfer Larissa4,Schmidt Peter4,Schimke Magdalena M.4,Paar Michael6,Niebauer Josef23ORCID,Cogo Annalisa7,Kriemler Susi8,Schwery Stefan9,Pickerodt Philipp A.10ORCID,Mayer Benjamin11,Bärtsch Peter12,Swenson Erik R.13ORCID

Affiliation:

1. Department of Anesthesiology and Intensive Care Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany

2. University Institute of Sports Medicine, Prevention and Rehabilitation, Paracelsus Medical University, Salzburg, Austria

3. Research Institute of Molecular Sports Medicine and Rehabilitation, Paracelsus Medical University, Salzburg, Austria

4. Department of Anesthesiology, Critical Care and Pain Medicine, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria

5. Division of Pulmonary and Critical Care Medicine, Massachusetts General Hospital, Boston, Massachusetts

6. Department of Radiology, Paracelsus Medical University, Salzburg, Austria

7. Biomedical Sport Studies Center, University of Ferrara, Ferrara, Italy

8. Department of Epidemiology, Biostatistics and Public Health Institute, University of Zürich, Zurich, Switzerland

9. Hospital of Valais, Sion, Switzerland

10. Department of Anesthesiology and Operative Intensive Care Medicine, Campus Charité Mitte and Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Berlin, Germany

11. Institute for Epidemiology and Medical Biometry, Ulm University, Ulm, Germany

12. Department of Internal Medicine, University of Heidelberg, Heidelberg, Germany

13. Department of Pulmonary, Critical Care and Sleep Medicine, VA Puget Sound Health Care System, University of Washington, Seattle, Washington

Abstract

This randomized, placebo-controlled, double-blind study is the first to investigate whether acetazolamide, which reduces acute mountain sickness (AMS), inhibits short-term hypoxic pulmonary vasoconstriction, and also prevents high-altitude pulmonary edema (HAPE) in a fast-climbing ascent to 4,559 m. We found no statistically significant reduction in HAPE incidence or differences in hypoxic pulmonary artery pressures compared with placebo despite reductions in AMS and greater ventilation-induced arterial oxygenation. Our data do not support recommending acetazolamide for HAPE prevention.

Funder

Deutsche Gesellschaft fur Berg- und Expeditionsmedizin

Salzburger Landesregierung

Wilderness Medical Society

Publisher

American Physiological Society

Subject

Physiology (medical),Physiology

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