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Figure 1 (A) T-wave oversensing may be observed during ventricular pacing as indicated by the markers. (B and C) Recordings of the AECD response to two episodes of spontaneous VF in two different patients. The first circle indicates the beginning of charge (200 J) of the device; the second circle indicates the full charge of the automatic external cardioverter defibrillator, which was in advisory mode.
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