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Periodic breathing recorded the evening of arrival on Pikes Peak during the 1911 Anglo-American Expedition to Pikes Peak (2)

July 12, 1911. Subject: British physiologist John Scott Haldane. The periodic breathing transitions into typical Cheyne-Stokes respiration after Haldane took six forced breaths. (Source: Douglas CG, Haldane JS, Henderson Y, Schneider EC. Physiological observations made on Pike's Peak, Colorado, with special reference to adaptation to low barometric pressures. Philosophical Transactions of the Royal Society, Series A 1913;203:185-318.)

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