Hering's Phenomenon
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Hering's phenomenon, also known as respiratory arrhythmia, is characterized by a slowing and arrhythmia of the pulse during slow, deep breathing, and is typical of the vagotonic symptom complex. This phenomenon disappears after bilateral sectioning of the vagus nerves, and the ratio between pulse rates during inspiration and expiration serves as a measure of the tone of the vagus and accelerating nerves of the heart.
Encyclopedia entry (1928–1936)
HERING'S PHENOMENON (E. Hering), or respiratory arrhythmia (pulsus irregularis respiratorius), is characterized by a slowing and arrhythmia of the pulse during slow, prolonged, and deep inspiration, and is typical of the vagotonic symptom complex. When the vagus nerves are cut on both sides, the respiratory arrhythmia disappears. The ratio between the pulse rate during inspiration and the pulse rate during expiration is a measure of the tone of the vagus nerve and the accelerating nerves of the heart.
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“Hering's Phenomenon.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/herings-phenomenon/