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[Dysfunctions of transvenous cardioverter/defibrillator electrode systems: clinical significance of system integrated diagnosis and measurement function--possibilities of partially automated system control].
- Source :
-
Zeitschrift fur Kardiologie [Z Kardiol] 1998 Aug; Vol. 87 (8), pp. 630-9. - Publication Year :
- 1998
-
Abstract
- Unlabelled: The aim of this study is the analysis of electrical failures in transvenous cardioverter/defibrillator (ICD) lead systems with regard to the importance of device implemented diagnostic and measurement functions and the potential role of an automated device-control in the detection of lead failures.<br />Methods: All consecutive ICD patients at our institution were enrolled in this retrospective investigation. The routine follow-up controls consisted in a complete evaluation of all diagnostic and measurement ICD features and additional controls in case of spontaneous arrhythmia episodes.<br />Results: Two hundred thirty patients, 193 male and 37 female, were enrolled in this study (mean age: 61.5 +/- 10.2 years; mean LVEF 32 +/- 9%). During a mean follow-up period of 29.5 +/- 18.4 (6-76) months, lead failure occurred in 19 patients (8%), 16 patients were implanted with an ICD, capable of diagnostic and measurement functions. All nonadequate device discharges could be classified as sensing-failure by stored electrograms. Device implemented measurement features revealed clinical important information in 13/16 patients (81%). In 14/16 patients, the lead defect could not be detected during routine follow-up. At the time of documented lead failure the safety of the implanted devices was already lost in 6/16 patients (38%).<br />Conclusions: Device implemented diagnostic and measurement options are of great importance in the early detection of ICD lead failures. The implementation of automated measurements of lead related parameters in connection with a patient alert function may contribute to a further increase in the safety of ICD therapy.
Details
- Language :
- German
- ISSN :
- 0300-5860
- Volume :
- 87
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- Zeitschrift fur Kardiologie
- Publication Type :
- Academic Journal
- Accession number :
- 9782596
- Full Text :
- https://doi.org/10.1007/s003920050222