Marton Bors1, Zsolt Bari1, Balazs Polgar1, Mate Vamos2, Aron Sztaniszlav3,
Robert Gabor Kiss1, Gabor Zoltan Duray1
1 Dep. of Cardiology/Hungarian Defence Forces Medical Centre, Budapest
2 Dep. of Cardiology/Goethe University, University Hospital Frankfurt, Germany
3 Hjärt-Lungkliniken/Universitetssjukhuset Örebro, Sweden
Background: Micra™ transcatether pacing system proved to be as effective and more safe than conventional transvenous pacemaker therapy based on data of historical patient cohort. Nevertheless head to head comparison of these pacing strategies is missing. The aim of our retrospective study was to compare complication frequency among patients with conventional pacmaker therapy and leadless Micra pacemaker.
Methods: Between 02.2014 and 04.2015 55 pateint recieved Micra transcatheter pacing system in our institution. At the same time period 146 patient was implanted with conventional transvenous VVI pacemaker.
Results: The mean follow-up time was 25,7 month. Among patient groups the following differences was observed; in the conventional pacemaker group were more female (49% vs. 31% p=0.024), patients were older (81.9± 9.3years vs. 76.4±7.5years p<0.005), and suffered from kidney (50% vs.10.9% p<0.005) and ischaemic heart disease (22% vs. 15% p=0.044) more likely, but prevalence of atrial fibrillation was lower (54% vs. 94.5% p<0.005) than in the Micra group. The composite end point of any serious complication and need for reintervention due to device dysfunction did not differ significantly (2% vs 5.4% p=0.25).
In the conventional pacemaker group 2 patients needed electrode revision because of high treshold and non-capture, one patient had reoperation due to skin erosion over the pulse generator. Among patients implanted with Micra pacemaker dysfunction did not occure, but 3 patient had complications at groin puncture site. Conclusion: In our retrospective study complication rate and need for reintervention due to device dysfunction was comparable among Micra™ transcatheter pacing system and conventional transvenous pacemaker.
Doctoral School: Basic and Translational Medicine
Program: Cardiovascular Disorders: Physiology and Medicine of Ischaemic Circulatory Diseases
Supervisor: Gabor Zoltan Duray