Abstract
Radiofrequency catheter ablation of accessory pathways and the atrioventricular junction often requires multiple applications of energy. The inability to determine the effects of any given application on the underlying tissue may contribute to this problem. In the present study, impedance was monitored in 20 patients undergoing radio/requency catheter ablation, and the relationship between an initial decrease in impedance and subsequent effects were examined. An initial fall in impedance of more than 10 Ω was 78% sensitive and 88% specific for predicting subsequent evidence of tissue heating (interruption of conduction or an abrupt rise in impedance due to coagulum formation). In contrast, initial values of voltage, current, or impedance did not distinguish between effective and ineffective applications of radiofrequency energy. Continuous monitoring of impedance may facilitate radiofrequency catheter ablation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 22-27 |
| Number of pages | 6 |
| Journal | Pacing and Clinical Electrophysiology |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1992 |
| Externally published | Yes |
Keywords
- accessory pathways
- impedance
- radiofrequency catheter ablation
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine