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Figure 3 Simultaneous recordings of the ECG and the MAPs in the RVOT and RVA during successful internal defibrillation shock delivered by the implantable cardioverter defibrillator (ICD). The PSRT in the RVOT is 205 ms; the PSRT in the RVA is 200 ms. The PSDR is 5 ms with termination of VF. Abbreviations as in Figure 1.