关于MAC的描述错误的是（）。
A.MAC越大，麻醉效能越强
B.吸入麻醉药的作用强度可以用MAC来表示
C.术中监测呼气末MAC，可用于评估吸入麻醉深度
D.MAC是评价吸入麻醉药药理特性的重要参数
E.吸入麻醉药的AD95约为1.3MAC
参考答案：A
解析：
最小肺泡浓度(MAC)是指能使50%患者对标准化的刺激无体动反应的最低吸入麻醉药肺泡浓度。MAC是评价吸入麻醉药药理特性的重要参数，测定MAC即可比较不同吸入麻醉药的强度，麻醉药强度与MAC值呈反比。大体上1.3MAC的任何吸入麻醉药都可以抑制95%患者对伤害性刺激的体动反应，近似AD95。
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