Table 4 The sensitivity, specificity, negative predictive value (NPV) and positive predictive value (PPV) to identify the precise origin of PVCs/IVTs from the tricuspid annulus (TA)
ECG variables | Sensitivity (%) | Specificity (%) | NPV (%) | PPV (%) |
|---|---|---|---|---|
rS pattern in lead V1 in patients with PVCs/IVTs arising from the free wall of TA | 93.10 | 83.33 | 96.43 | 71.43 |
Precordial R-wave transition ≤ V3 in patients with PVCs/IVTs arising from the septal TA | 100 | 100 | 100 | 100 |
QS pattern in lead V1 in patients with PVCs/IVTs arising from the septal TA | 83.33 | 93.10 | 71.43 | 96.43 |