Key result
Endocardial unipolar voltage mapping predicted epicardial scar (OR 0.94; 95% CI 0.93-0.97; P<0.001), with optimal cutoffs of <4.4 mV in the RV and <5.1 mV in the LV.
Why the study?
Does endocardial unipolar voltage mapping accurately predict epicardial scar in patients with scar-related ventricular tachycardia?
Observational (n=31)
Does endocardial unipolar voltage mapping accurately predict epicardial scar in patients with scar-related ventricular tachycardia?
Odds Ratio: 0.94 (95% CI 0.93–0.97)
p-value: p=< 0.001
Endocardial unipolar voltage mapping can indicate overlying epicardial scar, but its accuracy is limited in patients with nonischemic cardiomyopathy.
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Endocardial unipolar voltage may aid epicardial scar detection in scar-related VT; leaves open prospective validation and accuracy in nonischemic cardiomyopathy.
Tokuda et al. (2013) conducted an observational in Scar-related ventricular tachycardia (n=31). Endocardial unipolar voltage mapping vs. Distant endocardial sites was evaluated on Prediction of epicardial scar (bipolar voltage < 1.5 mV) (OR 0.94, 95% CI 0.93 to 0.97, p=< 0.001). Endocardial unipolar voltage mapping predicted epicardial scar (OR 0.94; 95% CI 0.93-0.97; P<0.001), with optimal cutoffs of <4.4 mV in the RV and <5.1 mV in the LV.
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