Pfeiffer D, Tebbenjohanns J, Manz M, Jung W, Lüderitz B
Medizinische Universitätsklinik, Bonn.
Z Kardiol. 1992 Nov;81(11):584-90.
The aim of the study was the evaluation of results of radiofrequency (RF) catheter ablation in relation to characteristics of regional endocardial potential morphology. 418 RF current deliveries in 26 patients with anterogradely conducting left-sided accessory pathways (AP) were investigated. A large regional atrial deflection (> 1/4 of ventricular potential) prior to RF discharge is a prerequisite for ablation success using the ventricular approach. A failing or extremely short (< 10 ms) isoelectric interval between atrial and ventricular deflections of the regional potential predicts a block of the AP. A persistent block can be expected if the regional electrogram contains an AP potential and the AP block occurs early (< 5 s) during onset of RF current.
本研究的目的是评估射频（RF）导管消融结果与局部心内膜电位形态特征之间的关系。对26例具有顺行传导的左侧旁路（AP）患者的418次RF电流发放进行了研究。在RF放电前出现大的局部心房偏转（>心室电位的1/4）是采用心室途径成功消融的先决条件。局部电位的心房和心室偏转之间等电位间期失败或极短（<10毫秒）预示AP阻滞。如果局部电图包含AP电位且在RF电流开始时早期（<5秒）出现AP阻滞，则可预期会出现持续阻滞。
