JTCS Email Content Delivery
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Personal Folders
Right arrow Download to citation manager
Right arrow Permission Requests
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Furman, S.
Right arrow Articles by Hurzeler, P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Furman, S.
Right arrow Articles by Hurzeler, P.

The Journal of Thoracic and Cardiovascular Surgery, Vol 69, 382-389, Copyright © 1975 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Pulse duration variation and electrode size as factors in pacemaker longevity

S Furman, J Garvey and P Hurzeler

For the past 4 years, we have used highly efficient Medtronic electrodes (Nos. 6901 and 6907), with small surface areas, for cardiac pacemakers. We have found that chronic thresholds average 1.6 Ma. at a 1 msec. pulse duration, compared to 4.9 Ma. for the conventional Medtronic No. 5816 electrodes. These electrodes have been used in association with Medtronic Models 5961 and 5931, ventricular-inhibited and asynchronous pulse generators in which output current and voltage are fixed and pulse duration is variable. Drain from the generator battery is directly related to impulse duration and is reduced at shorter durations. The strength-duration curve of cardiac stimulation suggests and actual long-term pacing has been achieved at an average of 0.2 to 0.3 msec., rather than the conventional 1.0 msec. Drain from the battery is one fourth that of pacemakers of 1970 and one half that of present day, conventional units. This fact suggests that a realistic average life of the pulse generator is 4 years or more.


This article has been cited by other articles:


Home page
 EuropaceHome page
J. Clementy, D. Rouves, S. Garrigue, S. S. Barold, P. Jais, and M. Haissaguerre
High impedance leads and safety margin. Electrical considerations based on a simplified expression of the 'paradigm'
Europace, January 1, 2002; 4(2): 121 - 128.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ANN THORAC SURG ASIAN CARDIOVASC THORAC ANN EUR J CARDIOTHORAC SURG
J THORAC CARDIOVASC SURG ICVTS ALL CTSNet JOURNALS
Copyright © 1975 by The American Association for Thoracic Surgery.