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[Reduction of dislocation of transvenous pacemaker electrodes taking intracardiac ECG potentials into account (author's transl)]
- Source :
- Deutsche medizinische Wochenschrift (1946). 103(24)
- Publication Year :
- 1978
-
Abstract
- For the assessment of stable positions of the electrodes radiographic control, threshold measurements and methods provoking dislocation are used. There is an average dislocation rate of endocardial electrodes of 7-11%. As a further parameter for intra-operative assessment of a stable electrode position intracardiac R-potentials were measured with the stimulation electrode. While QRS complexes in the surface ECG remain unchanged, intracardiac electrocardiograms show an alternating height of the R-amplitude from one ventricular action to the next. From these differences (deltaR) a stable electrode position can be assumed as long as deltaR is small (our patient group 2.12mV+/-1.05MV). Large differences (6.9mV+/-1.7MV) indicate a non-optimal fixation of the electrode tip. The dislocation rate including the post-operative exit block could be reduced below 2% by consideration of the R-amplitude alterations.
Details
- Language :
- German
- ISSN :
- 00120472
- Volume :
- 103
- Issue :
- 24
- Database :
- OpenAIRE
- Journal :
- Deutsche medizinische Wochenschrift (1946)
- Accession number :
- edsair.pmid..........072304a5dabc851662000fb82d7d88f3