Wide complex tachycardia is identified on an ECG by a heart rate over 100 bpm and a QRS duration over 0.12 seconds for at least 3 consecutive beats. The ACC/AHA/ESC guideline proposes an algorithm for differentiating types of wide complex tachycardia using ECG patterns. This includes algorithms from the Brugada working group to distinguish ventricular tachycardia from pre-excited tachycardia, and the aVR Vereckei algorithm which analyzes the velocity ratio between initial and terminal portions of the QRS complex in lead aVR to identify ventricular tachycardia or supraventricular tachycardia.

1. WIDE COMPLEX TACHYCARDIA
Presented by… Dr Amit Badgal
Moderator..DR SANJEEV AGGARWAL

2. Wide complex tachycardia:
12 lead ECG with rhythm strip…primary
tool.
Heart rate > 100bpm
QRS duration > 0.12seconds
≥3 consecutive beats

4. The algorithm proposed by the ACC/AHA/ESC guideline
for WCT differential diagnosis

11. ECG algorithms to differentiate wide
QRS-complex tachycardias

12. The algorithm of Brugada working group devised for
distinguishing VT from Pre-excited Tachycardia

13. The aVR Vereckei algorithm

14. Velocity ratio between initial and terminal 40 ms of
the QRS complex(Vi/Vt )in lead aVR
<1suggesting ventricular tachycardia
>1 suggests SVT (Vereckei
et al.).

22. Thank you