Table 1. MAP, LAP, HR, and CO of the Awake Animals before, during, and after Application of Naloxone or Naloxone Methiodide at Predetermined Time Points

Data are presented as mean values ± SD.

MAP = mean arterial pressure; LAP = left atrial pressure; HR = heart rate; CO = cardiac output; BL = baseline; MI = microsphere injection; NI = naloxone injection; NMI = naloxone methiodide injection.