Global and local dispersion of ventricular repolarization: endocardial monophasic action potential mapping in swine and humans by using an electro-anatomical mapping system.
作者： Ole Kongstad , Shiwen Yuan , Eva Hertervig , Magnus Holm , Edgars Grins
关键词: In patient 、 Electrocardiography 、 Time difference 、 Repolarization 、 Internal medicine 、 Mapping system 、 Cardiology 、 Ventricular Repolarization 、 Tachycardia 、 Global information
摘要: This article evaluates whether the global dispersion of ventricular repolarization (DVR) can be estimated from measurements between a few adjacent or remote sites. Monophasic action potentials (MAP) were recorded 61 +/- 18 left (LV) right (RV) sites in 10 pigs and 44 16 LV, RV 8 patients by using CARTO mapping system. MAP duration (MAPd) end-of-repolarization time calculated at each site 13 maps reconstructed. Global dispersions MAPd EOR over LV compared with DVR among 3 - 7 MAPs areas > = 0.7 < 1 cm(2) DVRs 2 greatest activation difference (remote DVR1) apical laterobasal DVR2). The significantly smaller than ones, 12 ms vs. 9 42 14 72 24 66 22 patients. DVR1 (30 17 40 28 patients) DVR2 (16 11 35 21 also DVRs. In conclusion, is poorly recordings sites, suggesting importance obtaining information evaluating DVR.
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