Key result
Cavotricuspid isthmus ablation causes transient ~99% acute coronary stenosis from vessel wall edema.
Why the study?
Does CTI radiofrequency ablation cause temporary coronary artery wall edema in patients undergoing ablation for atrial flutter?
Case Report (n=1)
Does CTI radiofrequency ablation cause temporary coronary artery wall edema in patients undergoing ablation for atrial flutter?
Acute stenotic lesions caused by radiofrequency catheter ablation during CTI ablation may be due to transient edema and can potentially resolve without coronary intervention.
Alerts operators to monitor for acute coronary compromise during CTI ablation; leaves open whether transient edema is a common reversible mechanism.
Acute coronary stenosis has been reported as a rare but potentially serious complication of cavotricuspid isthmus (CTI) ablation. Various causes of the stenosis have been reported (thrombus,1–4 coronary spasm1), but cause is often unknown.5–8 Most of the cases receive coronary intervention regardless of the cause. We present a case of “temporary edema” of the coronary artery wall provoked by CTI radiofrequency (RF) ablation.
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Nishimura et al. (2017) conducted a case report in Drug-resistant paroxysmal atrial fibrillation and typical atrial flutter (n=1). Cavotricuspid isthmus radiofrequency ablation was evaluated on Acute coronary stenosis due to transient edema. Cavotricuspid isthmus radiofrequency ablation caused transient coronary artery wall edema and 99% acute stenosis, which resolved completely without coronary intervention.
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