Key result
Initial vector force from surface ECG discriminated between aortic sinus cusp and right ventricular outflow tract tachycardia foci with 92% sensitivity and 88% specificity.
Why the study?
Does initial vector force from surface ECG distinguish tachycardias arising from the right ventricular outflow tract versus aortic sinus cusps in patients with outflow tract tachycardia?
Population
45 patients with outflow tract tachycardia
Comparison
Measurement of initial vector force from surface… vs Standard ECG criteria
Design
Cross-sectional
Authors
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Initial vector force analysis from surface ECG can accurately distinguish between right ventricular outflow tract and aortic sinus cusp origins of tachycardia, outperforming standard ECG criteria.
Observational (n=45)
Does initial vector force from surface ECG distinguish tachycardias arising from the right ventricular outflow tract versus aortic sinus cusps in patients with outflow tract tachycardia?
Yang et al. (2007) conducted an observational in Outflow tract tachycardia (n=45). Initial vector force from surface ECG vs. Standard ECG criteria was evaluated on Discrimination between aortic sinus cusps and right ventricular outflow tract foci. Initial vector force from surface ECG discriminated between aortic sinus cusp and right ventricular outflow tract tachycardia foci with 92% sensitivity and 88% specificity.
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