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Figure legend:
Figure 1. Metal tongue ring similar to the patient’s ring.
Figure 2. Patient’s ICD settings and lead parameters.
Figure 3. The electrocardiograms obtained from device interrogation demonstrating an episode of sustained VT at a rate of around 240 bpm, lasting approximately 43 second. Patient received anti tachycardia pacing (marked in red) followed by two failed ICD shocks. Later he spontaneously converted to normal sinus rhythm just prior to third shock. The shocks are marked by red boxes.
Table legend:
Table 1. Ineffective shocks received by the patient.