常见心律失常的识别与处理详解.ppt

尖端扭转性室速 心电图特点：室性宽大QRS波群，振幅不断变化，基主波方向每隔3-10个心搏突然倒转，即围绕基线扭转，其波峰方向频率160-280次/分，Q-T间期最著延长，T波增宽、可高大或深倒置。 室速的监护要点 应立即给予心电图及血压监测，迅速建立静脉通道。 观察患者生命体征及血流动力学是否稳定，将除颤器，利多卡因，胺碘酮，气管插管等急救设备在床旁备好。 观察患者有无头晕，意识淡漠，意识丧失或抽搐等阿斯综合征表现 静脉注射利多卡因，胺碘酮（观察） 如药物治疗无效且患者迅速出现血流动力学恶化，应立即给与直流电转复 ≤50J 室颤、室扑 心电图特点：心室扑动:正弦图形,波幅大而规整,频150~300 。 心室颤动:波形振幅与频率极不规则,频率150—500/minQRS波群-T完全消失. 临床表现?治疗/ Ⅰ度房室传导阻滞 心电图特点： P波正常、每个QRS波群前均有P波且QRS正常。 P-R间期＞0.2S。 节律规则。 心率正常。 二度Ⅰ型（文氏现象） 心电图特点： P波正常、每个QRS波群前均有P波。 P-R间期愈来愈长，直至最后有一个P波无法传导而产生QRS波群 心房节律规则，心室节律不规则。 一般心室率较慢。 二度Ⅱ型（莫氏现象） 心电图特点：P-R间期正常或延长、但固定不变，P波不能下传QRS波脱落，其呈2:1或3:1。 Ⅲ度房室传导阻滞 心电图特点：P_P间距相等，R_R间距相等，但P与QRS无关系。P-R间期会改变，P波频率大于QRS波频率。 房室传导阻滞的监护要点 Ⅰ度及Ⅱ度Ⅰ型房室传导阻滞患者一般不需监护 Ⅱ度Ⅱ型或Ⅲ度房室传导阻滞患者要给予心电图及血压监测，注意心率变化，并将阿托品，异丙肾上腺素，临时起搏器，除颤器等在床旁备好。 建立静脉通道，静脉注射阿托品，异丙肾上腺素 患者血流动力学处于不稳定状态，应及时安装临时起搏器。 Speaker抯 Notes: This presentation was prepared by an electrophysiologist for use by Medtronic. It is the intent of this lecture to inform the participants on the complexities of the ICD system, the features available to help troubleshoot patient episodes, and to instill awareness of when an electrophysiologist consult is warranted. Speaker抯 Notes: This presentation was prepared by an electrophysiologist for use by Medtronic. It is the intent of this lecture to inform the participants on the complexities of the ICD system, the features available to help troubleshoot patient episodes, and to instill awareness of when an electrophysiologist consult is warranted. Speaker抯 Notes: This presentation was prepared by an electrophysiologist for use by Medtronic. It is the intent of this lecture to inform the participants on the complexities of the ICD system, the features available to help troubleshoot patient episodes, and to instill awareness of when an electrophysiologist consult is warranted. Speaker抯 Notes: This presentation was prepared by an electrophysiologist for use by Medtronic. It is the intent of this lecture to inform the participants on the comp