Electrogram patterns predictive of successful catheter ablation of accessory pathways. Value of unipolar recording mode.
Why the study?
Do specific unipolar and bipolar electrogram patterns predict successful catheter ablation of accessory pathways in patients with overt preexcitation?
Population
135 patients with 142 distinct overt accessory pathways
Comparison
Catheter ablation using unipolar recording mode… vs Electrograms associated with unsuccessful…
Design
Cohort
Follow-up
mean 16 +/- 6 months
Authors
Discussion
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Member takes
Implication
Unipolar patterns may predict ablation success in overt preexcitation; hypothesis-generating and requires prospective validation before practice change.
Structured PICO
Do specific unipolar and bipolar electrogram patterns predict successful catheter ablation of accessory pathways in patients with overt preexcitation?
P
Population
135 patients with 142 distinct overt accessory pathways (21 right parietal or anteroseptal, 47 posteroseptal, and 74 left lateral pathways)
I
Intervention
Catheter ablation (fulguration) using unipolar recording mode in addition to bipolar anterograde and retrograde parameters
C
Comparator
Electrograms associated with unsuccessful ablation outcome
O
Outcome
Successful elimination of preexcitationsurrogate
Cite This Study
Haı̈ssaguerre et al. (1991) studied this question.