Fig. 2.

Representative tracings showing responses of arterial pressure, renal sympathetic nerve activity (RSNA), and integrated RSNA to repeated regional myocardial ischemia in a cat following sinoaortic denervation and bilateral vagotomy. A: shows an increase in MAP by 55 mmHg and integrated RSNA by 37% during the initial period of ischemia. B: demonstrated that the responses are reproducible, since MAP increased by 52 mmHg and integrated RNSA increased by 33% during the second period of ischemia after treatment with the vehicle (2% NaHCO₃, 2 ml iv). Neurograms 1–4 are representative samples of RSNA at times indicated by bar above integrated RSNA recordings. BP, blood pressure.