Figure 7-22 Baseline renal sympathetic efferent nerve activity (NA) and arterial blood pressure (BP) recorded in a conscious and isoflurane (I)-anesthetized dog (at 1.5% and 2.5% inspired concentrations). Nerve activity was depressed with the 2.5% inspired isoflurane. (Adapted from Seagard JL, Elegbe EO, Hopp FA, et al: Effects of isoflurane on baroreceptor reflex. Anesthesiology 59:511–520, 1983.)