It was reported that the patient was found to be unresponsive as an in-patient.The patient was noted to have had pacemaker mediated tachycardia (pmt).Programming changes were made.After the changes were made, the patient had a ventricular fibrillation (vf) episode with unsuccessful anti-tachycardia pacing (atp) therapy attempts, an unsuccessful high voltage (hv) 36j shock, and a successful reversion to sinus rhythm with a 40j shock.The patient had another episode of pmt prior to the ventricular tachycardia (vt)/vf.There was an episode of automatic mode switch (ams) detected prior to the pmt and vt, which showed competitive atrial pacing and repetitive non-reentrant ventriculoatrial synchrony (rnrvas), which the patient appeared to have been asymptomatic.There were no adverse health consequences to the patient.
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