High thresholds may alter end-of-life behavior in a dual chamber pacemaker.


We noted a series of 12 consecutive patients with a DDD Genisis pacemaker that showed an unexpected and a relatively rapid fall in battery voltage and output as these devices approached end-of-life (EOL). Twenty-one of 24 leads were Vitatron Helifix leads and there was a relatively high mean threshold (atrial 2.5 +/- 0.94 V; ventricular 2.9 +/- 0.65 V… (More)


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