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- W2804776075 abstract "Abstract Background Cardiac resynchronization therapy (CRT) is now generally delivered via quadripolar leads. Assessment of the effect of different vector programs from quadripolar leads on ventricular activation can be now done using non-invasive electrocardiographic mapping (ECM). Material and methods In nineteen patients with quadripolar LV leads, activation maps were constructed. The total ventricular activation time (TVaT) and the time for the bulk of ventricular activation (VaT10–90) were calculated. Results CRT delivered via a quadripolar lead significantly reduced TVaT and VaT10–90 by a mean of 16 ms and 31 ms, respectively, compared to baseline. There was a marked reduction in ventricular activation between the most and least synchronous vectors: 28% difference in baseline TVaT and 37% difference in VaT10–90. Conclusion Changes in the configuration of an LV quadripolar lead significantly affected ventricular activation timings in both ischaemic and non-ischaemic subjects. This suggests that programming of the optimal pacing vector may need to be individually tailored." @default.
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- W2804776075 date "2018-07-01" @default.
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- W2804776075 title "Non-invasive electrophysiological assessment of the optimal configuration of quadripolar lead vectors on ventricular activation times" @default.
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- W2804776075 doi "https://doi.org/10.1016/j.jelectrocard.2018.05.006" @default.
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