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- W2921744610 abstract "Backgrounds: Cardiac resynchronization therapy (CRT) provides no benefit in an approximately one third of the patients with advanced heart failure, that is not readily predictable by any clinical tool. We hypothesized that multi-channel magnetocardiography (MCG) capable of delineating ventricular activation sequence can identify heterogeneous (multi-directional) left ventricular (LV) intraventricular conduction, which would predict non-responders to CRT and poor outcomes after CRT implantation. Methods: We analyzed 64-Ch MCGs (1kHz) in 56 patients with advanced HF (LVEF 24±8%) and QRS duration (146±30ms) on ECG before CRT implantation. According to the QRS current arrow mapping of MCG, they were divided into Group-U (n=35) with uni-directional homogeneous ventricular conduction (UDC) and Group-M (n=21) with multi-directional heterogeneous ventricular conduction (MDC). CRT responder was defined when LVESV decreased >15% or LVEF increased >15%. Results: Baseline LVEF and NYHA class were comparable between t..." @default.
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- W2921744610 date "2013-11-26" @default.
- W2921744610 modified "2023-09-26" @default.
- W2921744610 title "Abstract 13090: Extremely Poor Prognosis after Cardiac Resynchronization Therapy is Predictable by Heterogeneous Multi-directional Left Ventricular Activation Sequence on Magnetocardiography" @default.
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