Pulmonary C-fibers do not play a role in ammonia-induced brief tachypnea in the rabbit.


To determine the role of pulmonary C-fibers in evoking a brief tachypnea induced by ammonia vapor, we examined the responses of diaphragm electromyogram (DIAP EMG) to ammonia inhalation before and after procaine treatment to the contralateral vagus nerve in urethane-anesthetized, spontaneously breathing rabbits with unilateral vagotomy. Procaine treatment… (More)


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