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- W2000852421 abstract "The goal of this study was to determine whether isolated diastolic potentials (IDPs) recorded during ventricular tachycardia (VT) are generated in zones of slow conduction and whether the arcs of block that bound these zones of slow conduction are functional or anatomic in nature.No previous studies have systematically investigated the response to pacing during VT and sinus rhythm at sites where IDPs are recorded.The study included 11 patients with a previous infarction who underwent radiofrequency catheter ablation of 15 hemodynamically stable, sustained VTs and in whom an IDP that could not be dissociated from the VT was detected during mapping.Pacing during VT at the site where the IDP was recorded resulted in concealed entrainment in each of the 15 VTs. In 10 of the 15 VTs, an IDP was present during sinus rhythm at the same site at which a diastolic potential was recorded during VT. In nine VTs, the isolated potential occurred early in diastole; in these cases, the QRS configuration during pacing in the setting of sinus rhythm was different from that during VT. In six VTs, the isolated potential occurred later in diastole, and in these cases, the QRS configuration during pacing in the setting of sinus rhythm was the same as that during VT.Isolated diastolic potentials may often be generated in an area of slow conduction bounded by arcs of block that are anatomically determined and present during sinus rhythm." @default.
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- W2000852421 date "1997-08-01" @default.
- W2000852421 modified "2023-09-26" @default.
- W2000852421 title "Response to Pacing at Sites of Isolated Diastolic Potentials During Ventricular Tachycardia in Patients With Previous Myocardial Infarction" @default.
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- W2000852421 doi "https://doi.org/10.1016/s0735-1097(97)00177-0" @default.
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