Title: Transition during radiofrequency ablation of manifest preexcitation. What is the mechanism?
Abstract: A 45-year-old lady was evaluated for recurrent episodes of palpitation. Her 12‑lead electrocardiogram (ECG) showed manifest but incomplete pre-excitation consistent with left sided accessory pathway. There was no structural heart disease by echocardiogram. She underwent an electrophysiology (EP) study after informed consent. A narrow QRS tachycardia consistent with orthodromic AV re-entry got induced. The accessory pathway was mapped to 2 'O clock of the mitral annulus (MA). While radio frequency ablation (RFA) was being performed at that site, an interesting phenomenon was observed (Fig. 1, Fig. 2). What is the mechanism?
Publication Year: 2021
Publication Date: 2021-05-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
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