Document Detail

Acute evaluation of a preformed single-pass VDD/DDD pacing lead.
MedLine Citation:
PMID:  9870009     Owner:  NLM     Status:  MEDLINE    
The clinical utility of single lead, atrial synchronous, ventricular pacing (VDD), for patients with normal sinus function and heart block is well established. Atrial stimulation, unavailable in VDD systems presents a significant disadvantage. DDD pacing systems however, require the introduction and positioning of two separate leads. The acute human study discussed evaluated a modified version of a commercially available VDD lead with a preshaped lobe, capable of both sensing and pacing the right atrium. "P" waves and atrial stimulation thresholds were determined in five patients. The mean P-wave was 2.5 +/- 1 millivolts. Atrial stimulation in the unipolar configuration was 1.6 +/- 0.5 volts and 1.7 +/- 0.9 volts in the bipolar configuration. These acute stimulation thresholds and sensing amplitudes were comparable to conventional DDD pacing systems. Therefore, single-lead DDD pacing may be feasible and warrants further study.
M S Hazday; D Mendelson; R R Brownlee
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing     Volume:  2     ISSN:  1383-875X     ISO Abbreviation:  J Interv Card Electrophysiol     Publication Date:  1998 Jun 
Date Detail:
Created Date:  1999-01-20     Completed Date:  1999-01-20     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9708966     Medline TA:  J Interv Card Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  171-3     Citation Subset:  IM    
Division of Cardiology, Orlando Regional Healthcare Systems Orlando, Florida, USA.
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MeSH Terms
Cardiac Pacing, Artificial / methods
Electrodes, Implanted
Equipment Design
Evaluation Studies as Topic
Heart Atria
Heart Block / therapy
Heart Ventricles
Pacemaker, Artificial*
Surface Properties
Reg. No./Substance:
7439-88-5/Iridium; 7440-06-4/Platinum

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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