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Chest, Vol 79, 33-38, Copyright © 1981 by American College of Chest Physicians

ARTICLES

Dirhythmic breathing

G Flemister, NB Goldberg and JT Sharp

Four patients with severe chronic obstructive lung disease and recent respiratory failure are described in whom two distinct simultaneous respiratory rhythms were identified, one at 8 to 13 breaths per minute and the other at 39 to 65 per minute. Magnetometer measurements of thoracoabdominal motion together with simultaneous electromyograms of multiple inspiratory muscles suggested that both rhythms were the result of coordinated action of several inspiratory muscles. We suggest that this phenomenon, which we have called dirhythmic breathing, results from the conflicting influence upon respiratory centers and motoneurons of two or more stimuli, some favoring rapid shallow breaths and others slow deep breaths.




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Copyright © 1981 by the American College of Chest Physicians.