Key result
Radiofrequency catheter ablation significantly decreased ADP- and epinephrine-induced platelet aggregation by 5% and 8.9% (P<.001), returning close to baseline within 24 hours.
Why the study?
Does radiofrequency catheter ablation influence platelet aggregation in patients with arrhythmia?
Observational (n=97)
Does radiofrequency catheter ablation influence platelet aggregation in patients with arrhythmia?
Radiofrequency catheter ablation transiently decreases ADP- and epinephrine-induced platelet aggregation, with the effect on epinephrine-induced aggregation being inversely associated with the total energy used.
Answers are grounded in this paper and cite their sources.
Transient aggregation drop post-ablation warrants no practice change yet; hypothesis-generating for energy-dependent hemostatic effects in arrhythmia procedures.
The objective of this article was to find out how radiofrequency catheter ablation (RFA) influences platelet aggregation (PA), and the dependence on the total energy (TE) of RFA used and the cause of arrhythmia. We investigated 97 patients. PA was analyzed before, after, and in 24 hours after RFA. ADP- and epinephrine-induced PA significantly decreased after RFA by 5% and 8.9% (P < .001), respectively, and increased in 24 hours close to baseline. PA induced by ADP and collagen did not radically depend on the TE. Epinephrine-induced PA decreased after RFA by 0%, 8% (P < .05), and 16.9% (P < .01) in groups of patients where the TEs used were <4000 J, 4000 to 15,000 J, and >15,000 J, respectively. There were no significant differences in PA between groups based on the cause of arrhythmia. ADP- and epinephrine-induced PA significantly decreased after RFA and returned close to baseline in 24 hours. Epinephrine-induced PA was inversely associated with the TE used for RFA.
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Kozlovaitė et al. (2007) conducted an observational in Arrhythmia (n=97). Radiofrequency catheter ablation vs. Baseline (pre-ablation) was evaluated on ADP- and epinephrine-induced platelet aggregation (p=<.001). Radiofrequency catheter ablation significantly decreased ADP- and epinephrine-induced platelet aggregation by 5% and 8.9% (P<.001), returning close to baseline within 24 hours.
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