[Reflex changes in pulmonary ventilation after stimulation of tissue receptors with solutions modeling metabolic acidosis].

In anesthetized cats, perfusion of the small intestine, m. gastrocnemius or hindlimb with solutions simulating metabolic acidosis produced a reflex enhancement of breathing proportional to the acidosis degree; this enhancement was mainly due to increases of the tidal volume rather than of respiratory rate. Similar data were obtained when ischemia developed in the above organs.