女,30岁,突发心悸1小时,心电图示:心率150次/分,律规整,QRS波正常,QRS波群后可见逆行P’波。治疗首选() A.胺碘酮。 利多卡因。 腺苷。 西地兰。 电复律。
女,30岁,突发心悸1小时,心电图示:心率150次/分,律规整,QRS波正常,QRS波群后可见逆行P’波。诊断为() A.窦性心动过速。 阵发性室上性心动过速。 阵发性室性心动过速。 心房颤动。 心房扑动。
A project life cycle is a collection of generally sequential project()(1) whose name and number are determined by the control needs of the organization or organizations involved in the project. The life cycle provides the basic ()(2) for managing the project, regardless of the specific work involved.空白(2)处应选择() A.plan。 fraction。 main。 framework。
患者男性,56岁,头晕、心悸1周,偶有晕厥。既往有高血压、冠心病病史,血压105/60mmHg,心率34次/分,律不齐。心电图示PR间期为0.22秒,部分P波后有QRS波群脱落其心电图诊断为() A.一度房室传导阻滞。 二度Ⅱ型房室传导阻滞。 二度Ⅰ型窦房传导阻滞。 三度房室传导阻滞。 二度Ⅰ型房室传导阻滞。
A project life cycle is a collection of generally sequential project()(1) whose name and number are determined by the control needs of the organization or organizations involved in the project. The life cycle provides the basic ()(2) for managing the project, regardless of the specific work involved.空白(1)处应选择() A.phases。 processes。 segments。 pieces。
患者女性,42岁,风湿性心脏病8年,超声心动图检查示二尖瓣中度狭窄。近1个月工作较劳累,出现咳嗽、咳痰、心慌、乏力和夜间阵发性呼吸困难此患者首先应考虑的诊断是()