September 1, 1994Circulation
Temperature monitoring during radiofrequency catheter ablation procedures using closed loop control. Atakr Multicenter Investigators Group.
Key result
Radiofrequency catheter ablation using closed loop temperature control resulted in a lower incidence of coagulum formation compared to power control mode (0.8% vs 2.2%, P<0.01).
Why the study?
Does temperature-controlled radiofrequency ablation reduce the incidence of coagulum compared to power-controlled ablation in patients undergoing catheter ablation?
Population
270 patients undergoing catheter ablation of atrioventricular nodal reentrant tachycardia, an accessory…
Comparison
Radiofrequency catheter ablation in temperature… vs Radiofrequency catheter ablation in power…
Design
Cohort
Authors
Discussion
Loading...
Member takes
Implication
Temperature control was associated with less coagulum; hypothesis-generating and requires randomized confirmation before practice change.
Study Design
Type
Cohort (n=270)
Multicenter
Yes
Structured PICO
Does temperature-controlled radiofrequency ablation reduce the incidence of coagulum compared to power-controlled ablation in patients undergoing catheter ablation?
P
Population
270 patients undergoing catheter ablation of atrioventricular nodal reentrant tachycardia, an accessory pathway, and/or the atrioventricular junction
I
Intervention
Radiofrequency catheter ablation in temperature control mode (closed loop feedback control) (n=225)
C
Comparator
Radiofrequency catheter ablation in power control mode (fixed power output) (n=45)
O
Outcome
Incidence of developing a coagulumsafety
Main Result
Absolute Event Rate: 0.8% vs 2.2%
p-value: p=< .01
Closed loop temperature control during radiofrequency ablation significantly reduces coagulum formation compared to fixed power control.
Cite This Study
Calkins et al. (1994) conducted a cohort in Atrioventricular nodal reentrant tachycardia, accessory pathway, and/or atrioventricular junction (n=270). Radiofrequency catheter ablation in temperature control mode vs. Radiofrequency catheter ablation in power control mode was evaluated on Incidence of developing a coagulum during radiofrequency applications (p=< .01). Radiofrequency catheter ablation using closed loop temperature control resulted in a lower incidence of coagulum formation compared to power control mode (0.8% vs 2.2%, P<0.01).