Key result
Epicardial mapping alone may incorrectly identify the origin of ventricular tachycardias, as epicardial breakthrough sites varied from 5mm to 6cm from the true subendocardial origin.
Why the study?
Does epicardial mapping accurately identify the origin of ventricular tachycardias compared to endocardial mapping in a canine model?
Does epicardial mapping accurately identify the origin of ventricular tachycardias compared to endocardial mapping in a canine model?
Epicardial mapping alone is insufficient to accurately identify the origin of ventricular tachycardias, highlighting the need for endocardial mapping to guide surgical ablation.
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May warrant combined endo-epicardial mapping in VT ablation; leaves open validation in human studies.
Spielman et al. (1978) studied Ventricular tachycardia (n=28). Epicardial mapping vs. Endocardial mapping was evaluated on Accuracy of identifying the site of origin of ventricular tachycardias. Epicardial mapping alone may incorrectly identify the origin of ventricular tachycardias, as epicardial breakthrough sites varied from 5mm to 6cm from the true subendocardial origin.
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