objective to determine the optical dose of nicardipine(n) for the hemodynamic stability and less cardiovascular stress response during the pre - postintubation period.
目的为在气管插管时减轻心血管应激反应和维持血流动力学稳定,选出尼卡地平的理想剂量。
conclusion cardiovascular stress response can be decreased with hans in the operation of thyroid tumors and anesthetic effect can be strengthened.