Figure 6. Responses of mean arterial pressure (MAP) and renal sympathetic nerve activity (RSNA) to 4% isoflurane for 10 min in group 1 (an intact rabbit). RSNA began to increase at 1 min after the start of inhalation, reached the maximum at 4 min, and gradually declined thereafter, whereas MAP decreased at 1 min, recovered and even exceeded the baseline level at 3 min, and gradually decreased thereafter.