It was reported that the patient experienced an episode of ventricular tachycardia (vt).The device appropriately identified the vt and delivered high voltage therapy, however, the shock was unable to convert the arrhythmia.The patient presented in the hospital where external defibrillation was delivered to return the patient to sinus rhythm.Abbott technical support was contacted and noted the device behaved normally according to its programmed settings.No device malfunction was alleged.The device was reprogrammed to avoid any further episodes of inadequate therapy.The patient was in stable condition.
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