Arrhythmias & electrophysiology

Long-term risk of right coronary artery injury after catheter ablation of cavotricuspid isthmus–dependent flutter

Heart RhythmPublished Retrospective case-cohort study

Authors' conclusion

There was no observed relationship between CTI RFA and the number or severity of angiographically apparent RCA stenoses in long-term follow-up.

Study context

Population
Patients undergoing atrial fibrillation (AF) ablation with or without cavotricuspid isthmus (CTI) ablation, 2002–2018, with subsequent coronary angiography
Participants
156 patients
Exposure
CTI + AF ablation vs AF ablation alone
  • CTI + AFn = 81
  • AF alonen = 75reference
Outcome
Incidence and severity of angiographic RCA stenoses
Follow-up
Long-term
Methodological details2-center, blinded angiographic scoring, prespecified falsification end points
  • 2-center
  • Blinded angiographic scoring
  • Prespecified falsification end points

Main finding

As reported in the abstract

CTI ablation not a predictor of right coronary artery (RCA) stenosis severity (regression)
P = .6

Observational data: associations, not effects.

Further findings

Time from ablation to CAG

P = 0.5

Coronary disease at sites remote to CTI (falsification end points)

No difference in coronary disease at remote sites
P = NS for all

Original publication

Long-term risk of right coronary artery injury after catheter ablation of cavotricuspid isthmus–dependent flutter. Heart Rhythm. Published 19 September 2024. doi:10.1016/j.hrthm.2024.09.029

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