Document Detail

VDD pacemaker replacement is safe and reliable independently of the previously implanted lead: a prospective and controlled study.
MedLine Citation:
PMID:  16755339     Owner:  NLM     Status:  MEDLINE    
Theoretically, replacement of a VDD device requires using a similar pacemaker to provide the best match between the filtering characteristics of the pacemaker and the atrial dipole of the lead. This study evaluated the performance of newly implanted Vitatron VDD pacemakers connected to dedicated leads and compared the results with those of the same Vitatron pacemakers used as replacement but connected to a variety of nondedicated leads. METHODS: 23 consecutive patients (15 M, 8 F, 78 +/- 6 years) in Group 1 underwent pacemaker replacement with a VDD(R) Saphir 3 (Vitatron BV, Arnhem, The Netherlands) device designed for an 8.6 mm atrial dipole. Atrial dipoles of the previously implanted leads ranged from 5 to 30 mm. Another 22 consecutive patients (14 M, 8 F, 80 +/- 7 years) in Group 2 received a Saphir 3 pacemaker with the related dedicated lead. RESULTS: P-wave amplitude measured by the same Pacing Sensing Analyzer (PSA) at the first implantation was 1.7 +/- 0.8 vs. 1.7 +/- 0.5 mV (P = NS) in groups 1 and 2 respectively. P-wave amplitudes measured at 1 month follow-up after replacement in Group 1 and at 1 month follow-up after implantation in Group 2 were 0.69 +/- 0.5 vs. 0.85 +/- 0.3 mV (P = NS) respectively. The percentage of atrial sensing at the same follow-up was 97 +/- 3 vs. 95 +/- 5% (P = NS) in groups 1 and 2 respectively. CONCLUSIONS: Replacement of VDD pacemakers with the Saphir 3 model designed for a short dipole is safe and reliable when used in combination with previously implanted nondedicated leads.
Alessandro Fabiani; Antonio Burali; Enrico Manfredini; Giorgio Corbucci; Leonardo Bolognese; S Serge Barold
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Publication Detail:
Type:  Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing     Volume:  15     ISSN:  1383-875X     ISO Abbreviation:  J Interv Card Electrophysiol     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-06-06     Completed Date:  2007-01-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9708966     Medline TA:  J Interv Card Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  107-11     Citation Subset:  IM    
Div Cardiologia, Osp Area Aretina Nord, Arezzo, Italy.
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MeSH Terms
Aged, 80 and over
Device Removal
Electrodes, Implanted
Equipment Design
Equipment Failure
Heart Block / therapy*
Pacemaker, Artificial*
Prospective Studies

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