Abstract
An endomyocardial electrogram (ECG) was reported to be a sensitive and practicable method for rejection monitoring after heart transplantation. Long-term follow up was limited, however, by variations of signals. The repolarization part of ECG signals vary with changes of heart rate. Both can be avoided by using pacemaker-induced signals. For stimulation and sensing of the ventricular-evoked response, a new type of electrode with fractal surface structure was used. Twenty patients undergoing heart transplantation were evaluated. Amplitudes of the depolarization and repolarization part of the ventricular-evoked response signals were analyzed and related to the degree of acute rejection according to histological findings from endomyocardial biopsy. Signals were transferred by Internet and analyzed automatically. In the case of focal moderate rejection (grade 2, International Society for Heart Transplantation grading) and higher degrees of rejection, a significant amplitude decrease was found. This sensitive non-invasive method for rejection monitoring with a high level of reliability provides the possibility of reducing the number of endomyocardial biopsies.
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© 1996 Springer-Verlag Berlin Heidelberg
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Auer, T. et al. (1996). Evoked epimyocardial electrogram for rejection diagnosis after heart transplantation. In: Mühlbacher, F., et al. Transplant International . Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-00818-8_63
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DOI: https://doi.org/10.1007/978-3-662-00818-8_63
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