Pacemaker lifetimes—A review and definitions, based on experience in Glasgow with Chardack-Greatbatch (Medtronic) pacemakers
| Autor: | G. D. Green, Gavin Shaw, W. H. Bain, A.C.F. Kenmure, W. Forbes |
|---|---|
| Rok vydání: | 1970 |
| Předmět: |
Cardiac Catheterization
Pacemaker Artificial medicine.medical_specialty Time Factors INSULATION FAILURE business.industry Heart block General surgery Mortality rate Technical failure Failure rate medicine.disease Catheterization Heart Block medicine Humans In patient Implant Cardiology and Cardiovascular Medicine business Electrodes |
| Zdroj: | American Heart Journal. 80:414-421 |
| ISSN: | 0002-8703 |
| DOI: | 10.1016/0002-8703(70)90106-7 |
| Popis: | By June 30, 1969, 142 Medtronic generators had been implanted in 100 patients. In this follow-up report, the “average lifetime” and “failure rate for a given implant lifetime” are discussed and these statistics are supplemented by more meaningful detailed facts. The generator average lifetime implanted within the last three years, ending June 30, 1969, is 18 months. The one year generator implant lifetime failure rate for the periods October, 1963, to June 30, 1969, and July 1, 1966, to June 30, 1969, are 2.0 per cent and nil, respectively. The corresponding figures for two years' implant lifetime are 23 and 36 per cent, respectively. The detailed results show that many generators are working satisfactorily after periods up to 28 months. Preliminary indications are that the reliability of the demand generator is comparable with that of the fixed-rate generator. If this proves to be the case in the long term, demand generators ought to be used in preference to fixed-rate generators in patients in complete heart block. Lead failures are now rare, the last conducting-lead failure occurred in October, 1968, and the last insulation failure occurred in January, 1968. There appear to be no disadvantages of the bipolar catheter. The mortality rate arising from technical failure of a pacemaker is extremely low. Examination of the reasons for removal of pacemakers shows that almost as many are now being changed for clinical reasons as for technical reasons. |
| Databáze: | OpenAIRE |
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