[名词解释] 头围

星状神经节阻滞可出现的并发症为() ["A．药物误入血管引起毒性反应","B．药液误入蛛网膜下隙","C．气胸","D．膈神经阻滞","E．喉返神经麻痹"] 注意力 不能同时双侧阻滞的臂丛入路有() ["A．腋入路","B．锁骨上法","C．锁骨下血管旁法","D．肌间沟法","E．颈入路法"] 预防局麻药中毒的措施包括() ["A．加入微量肾上腺素","B．最低有效局麻药浓度","C．麻醉前应用镇静药","D．减小局麻药用量","E．加快注药速度"] 隐睾 头围