Depression of ventilation by dopamine in cats: effects of bilateral cervical sympathetic and vagal trunk section.


The contribution of sympathetic and vagal inputs to ventilatory depression induced by dopamine was studied in eighteen anaesthetized, spontaneously breathing, normoxic cats. Breathing was via a tracheostomy. Dopamine (20 micrograms (kg body wt)-1) was injected intravenously in the intact animal, then after section of the cervical sympathetic trunks, and… (More)


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