长R-P的SVT鉴别诊断常用的电刺激方法课件

判断标准РSVT种类РVA·关系РV = A?V > A±AV 分离РV < AРAVNRT、AVRT、AT?ONVRT、ONFRT、AVNRT(排除AVRT和AT)?AVNRT、AT(排除AVRT)РVA间期РVA >70 ms?VA ≤ 70 ms?VA > AVРaAVNRT、AVRT、AT?tAVNRT、AT(排除AVRT)?aAVNRT、AT、AVRT(slow AP)Р心房激动顺序Р高-低?向心性?离心性РAT?AVNRT、AVRT、AT?AVRT、ATР自行终止Р终止无A波?终止无V波РAVNRT、AVRT、AT?AVNRT、AVRT(排除AT)РHH间期改变在AA改变之前Р是?否РAVNRT、AVRT(排除AT)?AVNRT、AVRT、ATР束支阻滞致VA间期延长>30msР是?否РAVRT(阻滞同侧游离壁AP)?AVNRT、AVRT、ATРVeenhuyzen,et al. PACE 2011; 34:767Р小结:给予刺激之前的分析РVeenhuyzen,et al. PACE 2011; 34:767Р心室超速刺激(VOP)Р方法?起搏后激动顺序?刺激部位与显性拖带?定量参数的测量РVeenhuyzen,et al. PACE 2011; 34:767Р方法Р测量TCL,以短于TCL 10-40ms S1S1起搏心室?如果VA=1:1,停止起搏,拖带后第一跳?起搏部位РVeenhuyzen,et al. PACE 2011; 34:767Р起搏后激动顺序Р如拖带时VA分离,提示房速?V-A-A-V:诊断房速?V-A-V:提示AVNRT或者AVRT?心室超速刺激(VOP)的陷阱РVeenhuyzen,et al. PACE 2011; 34:767РAT为什么是V-A-A-(H)-VРVeenhuyzen,et al. PACE 2011; 34:767