Estimation of atrial response to entrainment pacing using electrograms recorded from remote sites.
Estimation of atrial response to entrainment pacing using electrograms recorded from remote sites.
复制标题
使用从远程站点记录的电图估计心房对夹带起搏的反应。
DOI：
10.1046/j.1540-8167.2000.01215.x
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发表时间：
2000
影响因子：
2.7
通讯作者：
Walsh,EP
中科院分区：
文献类型：
--
作者：
Triedman,JK;Alexander,ME;Berul,CI;Bevilacqua,LM;Walsh,EP
Determination of Entrainment Response.Introduction:Assessing the entrainment response by measuring pustpacing intervals (PPIs) at the pacing site facilitates localization of reentrant circuits, but may be technically difficult.Methods and Results:There were 269 right atrial sites entrained in 21 circuits in congenital heart patients left atrial (LA) electrograms were recorded. Entrainment response was measured by two methods: (1) PPI‐tachycardia cycle length, and (2) the difference in latencies between the stimulus artifact and the pacing site electrogram, referenced to the LA electrogram. PPI also was measured from the LA as an index of antidromic activation. Among 43 pacing sites with antidromic LA activation, half showed a discrepancy ≥25 msec between methods 1 and 2. At the other 226 sites, agreement between the two methods was high (mean discrepancy ‐3 ± 8 msec, r = 0.975, 0 sites with discrepancy ≥25 msec). Correcting all sites by LA antidromicity reduced the mean discrepancy to +1 ± 6 msec and improved correlation (r = 0.988).Conclusion:LA electrograms can be used to estimate right atrial entrainment response, if antidromic activation of the LA is recognized and taken into account.
