Effects of dispersive electrode position and surface area on electrical parameters and temperature during radiofrequency catheter ablation.
Positioning of the dispersive electrode has no significant effect during radiofrequency ablation. Doubling the surface are of the dispersive electrode results in a lower impedance, higher current delivery, and increased tip temperatures, particularly if the baseline impedance is >100 ohms. These findings may have important implications for optimizing radiofrequency energy delivery using currently available radiofrequency generators.
Nath
S
S
Department of Internal Medicine, Univerisity of Virginia School of Medicine, Charlottesville, Virginia 22908, USA.
DiMarco
J P
JP
Gallop
R G
RG
McRury
I D
ID
Haines
D E
DE
D006328:Cardiac Catheterization / Q000295:instrumentation; D017115:Catheter Ablation / Q000295:instrumentation* / Q000379:methods; D015331:Cohort Studies; D004553:Electric Conductivity; D017097:Electric Impedance; D004566:Electrodes; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013499:Surface Properties; D013696:Temperature; D013821:Thermometers