Effective discrimination of wide QRS complex tachycardia with a new algorithm - the Prelocalization Series Algorithm

Figures

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  Fig. 1. ROC curves of the three series of algorithms for diagnosing VT and SVT + PXT

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  Fig. 2. ROC curves of the three single-process algorithms for diagnosing VT and SVT + PXT

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  Fig. 3. Image of the prelocalization series algorithm

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  Fig. 4. WCT (VT), the Prelocalization Series Algorithm diagnosed VT because of steps 1, 5 (leads II, III, aVF show R-type, aVR shows QS type). The Brugada Series Algorithm initially judged VT because of step 4 (V1 lead RS time>60ms), and diagnosed PXT because it did not match steps 5~7 VT pattern. The Vereckei Series Algorithm initially judged VT because of step 4 (vi/vt < 1), and diagnosed PXT because it did not match steps 5~8 VT pattern

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  Fig. 5. WCT (PXT), the Prelocalization Series Algorithm initially judged VT because of step 2 (lead aVF shows QS type), and diagnosed PXT because it did not meet steps 5~8 VT pattern. The Brugada Series Algorithm initially judged VT because of step 4 (V1 lead shows a biphasic wave), and diagnosed PXT because it did not match steps 5~7 VT pattern. The Vereckei Series Algorithm initially judged VT because of step 2 (q wave > 40ms), and diagnosed PXT because it did not match steps 5~8 VT pattern

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  Fig. 6. WCT (VT), the Prelocalization Series Algorithm diagnosed VT because of steps 3, 6 (leads I, aVF, V6 are mainly S-wave dominant). The Brugada Series Algorithm diagnosed VT because of steps 4, 5 (V6 lead R/S < 1, leads V4~V6 are mainly negative waves). The Vereckei Series Algorithm diagnosed SVT because of step 4 (Vi/Vt > 1)

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  Fig. 7. WCT (VT), the Prelocalization Series Algorithm initially judged VT due to step 4 (V1 showing a qR pattern with a descending branch notch), and diagnosed VT due to step 7 (V2 lead showing a returning notch on the R wave). The Brugada Series Algorithm initially judged VT due to step 4 (V1 lead showing a biphasic wave), and diagnosed PXT as it did not match the VT patterns in steps 5 to 7. The Vereckei Series Algorithm diagnosed SVT due to step 4 (vi/vt > 1)

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  Fig. 8. WCT (VT), the Prelocalization Series Algorithm initially judged VT due to step 4 (V1 lead not showing a sharp r-wave), and diagnosed PXT as it did not match the VT patterns in steps 5 to 8. The Brugada Series Algorithm initially judged VT due to step 4 (V1 lead showing a notched S wave), and diagnosed PXT as it did not match the VT patterns in steps 5 to 7. The Vereckei Series Algorithm initially judged VT due to step 4 (vi/vt < 1), and diagnosed PXT as it did not match the patterns in steps 5 to 8

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  Fig. 9. WCT (PXT), the Prelocalization Series Algorithm initially judged VT due to step 4 (V1 not conforming to the typical RBBB pattern), and diagnosed PXT as it did not match the VT patterns in steps 5 to 8. The Brugada Series Algorithm initially judged VT due to step 4 (V1 lead showing a monophasic wave), and diagnosed PXT as it did not match the VT patterns in steps 5 to 7. The Vereckei Series Algorithm diagnosed VT due to steps 1 and 6 (V1 lead showing an R pattern)