治疗中重度支气管哮喘最主要的药物是() ["茶碱类","糖皮质激素","抗胆碱能类","钙离子拮抗剂","色苷酸钠"]
心房颤动的心电图表现是什么?
最大呼吸流量(PEF)变异率达到怎样的标准,可诊断为哮喘() ["日内或昼夜波动率≤10%","日内或昼夜波动率≥20%","日内或昼夜波动率≥10%","日内或昼夜波动率≤20%","无变化"]
急性心肌梗死有哪几种基本心电图变化?
最易并发咯血的疾病是() ["支气管扩张","支气管内异物","良性支气管瘤","慢性支气管炎","支气管哮喘"]
室性期前收缩的心电图表现是什么?