Abstract
Rate and time-dependent impairment in conduction (Fatigue phenomenon) is a characteristic of the AV node. It has also been demonstrated in the His Purkinje system and accessory A-V pathway with depressed conduction or under the effect of sodium channel blockers. The present case demonstrates for the first time, the occurrence of fatigue phenomenon in an accessory A-V pathway following the application of radiofrequency energy. The transient injury resulted in anterograde block that was exacerbated with prolonged periods of stimulation and at fast rates. Hypopolarization of the accessory A-V pathway due to radiofrenquency energy with inactivation of the sodium channels appears as the most likely explanation of this phenomenon.
Translated title of the contribution | Fatigue phenomenon in an accessory a-v pathway following delivery of radiofrequency |
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Original language | Spanish |
Pages (from-to) | 226-228 |
Number of pages | 3 |
Journal | Revista de la Federacion Argentina de Cardiologia |
Volume | 44 |
Issue number | 4 |
State | Published - Oct 2015 |
All Science Journal Classification (ASJC) codes
- Cardiology and Cardiovascular Medicine