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. 2021 Mar 1;8:557369. doi: 10.3389/fmed.2021.557369

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Copyright © 2021 Bisang, Latshang, Aeschbacher, Huber, Flueck, Lichtblau, Ulrich, Hasler, Scheiwiller, Ulrich, Bloch and Furian.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effect of nocturnal oxygen therapy at 2,048 m on main outcomes. The plot shows median difference (95% confidence intervals) between altitude-induced changes during nights with oxygen and placebo for the heart rate, corrected QT interval (QTc), oxygen saturation (SpO₂), and oxygen desaturation index (ODI).