The vulnerability of the right atrium
- 1 January 1979
- journal article
- Published by Springer Nature in Klinische Wochenschrift
- Vol. 57 (1) , 31-36
- https://doi.org/10.1007/bf01476979
Abstract
70 Patienten wurden mittels vorzeitiger Vorhofstimulation bei 3 verschiedenen Frequenzen: 80, 100 und 120/min untersucht. Bei jeder dieser Frequenzen wurden die effektive, die relative, die gesamte und die funktionelle Refraktärzeit des rechten Vorhofes bestimmt. Bei 30 Patienten traten während der vorzeitigen Stimulation Zeichen einer gesteigerten Vorhofvulnerabilität auf. Sie wurden der sog. Vulnerabilitätsgruppe zugeordnet. Die Gruppe der verbleibenden 40 Patienten wurde als Normalgruppe bezeichnet. Die statistische Auswertung ergab in der Vulnerabilitätsgruppe signifikant längereP-Wellen (pppP waves (pp<0.001) in the vulnerability group. With increasing driving rate there was an increased tendency to repletitive firing in the vulnearability group. The phenomenon of vulnerability correlated well with the rate-induced shortening of the effective and the lengthening of the relative refractory period. The above described phenomena are compatible with the concept of re-entry as the electrophysiologic mechanism of atrial vulnerability in man.Keywords
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