Key result
Local electrogram characteristics, such as a QRS-V interval ≤ +10 ms, identified successful ablation sites with 98% sensitivity but only 11% positive predictive accuracy.
Why the study?
Do local electrogram characteristics predict successful target sites for radiofrequency ablation of accessory atrioventricular pathways in patients with paroxysmal supraventricular tachycardia?
Population
60 patients with paroxysmal supraventricular tachycardia undergoing radiofrequency catheter ablation of…
Design
Cohort
Authors
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Low predictive accuracy cautions against relying on local electrograms for ablation targeting; leaves open the need for superior mapping technologies.
Observational (n=60)
Do local electrogram characteristics predict successful target sites for radiofrequency ablation of accessory atrioventricular pathways in patients with paroxysmal supraventricular tachycardia?
p-value: p=<0.001
Local electrogram characteristics have low positive predictive accuracy for identifying successful ablation sites for accessory pathways, suggesting a need for improved catheter technology.
Bashir et al. (1993) conducted an observational in Paroxysmal supraventricular tachycardia (n=60). Local electrogram characteristics (QRS-V interval and accessory pathway potential) was evaluated on Successful ablation outcome at the attempted site (p=<0.001). Local electrogram characteristics, such as a QRS-V interval ≤ +10 ms, identified successful ablation sites with 98% sensitivity but only 11% positive predictive accuracy.
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