Idiopathic right ventricular outflow tract tachycardia: Narrowing the anatomic location for successful ablation
Key result
An electrocardiography-guided approach successfully identified identical pace maps on the septum of the RVOT, resulting in successful ablations in 16 of 18 patients (88.9%).
Why the study?
Does an electrocardiography-guided approach facilitate pace mapping and successful ablation in patients with idiopathic RVOT ventricular tachycardia?
Population
18 consecutive patients with idiopathic right ventricular outflow tract (RVOT) ventricular tachycardia
Design
Case_series
Authors
Discussion
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Member takes
Implication
May aid ECG-guided ablation in idiopathic RVOT VT; hypothesis-generating and requires prospective validation.
Study Design
Type
Observational (n=18)
Structured PICO
Does an electrocardiography-guided approach facilitate pace mapping and successful ablation in patients with idiopathic RVOT ventricular tachycardia?
P
Population
18 consecutive patients with idiopathic right ventricular outflow tract (RVOT) ventricular tachycardia
I
Intervention
Electrocardiography-guided approach based on QRS orientation in lead 1 and R wave progression in precordial leads to find pace maps matching the arrhythmia for radiofrequency ablation
O
Outcome
Finding identical pace maps and successful ablationsurrogate
An ECG-guided approach using QRS orientation and R wave progression can successfully localize the ablation site to the anterior superior aspect of the RVOT septum in most patients with idiopathic RVOT ventricular tachycardia.
Cite This Study
Movsowitz et al. (1996) conducted an observational in Idiopathic right ventricular outflow tract (RVOT) ventricular tachycardia (n=18). Electrocardiography-guided pace mapping for radiofrequency ablation was evaluated on Successful ablation based on identical pace maps. An electrocardiography-guided approach successfully identified identical pace maps on the septum of the RVOT, resulting in successful ablations in 16 of 18 patients (88.9%).