Diagnostic criteria

  Wide QRS complex tachycardia.

  Inferior axis in the frontal plane.

  Left bundle branch block morphology with precordial R/S transition region at or after lead V3.



In the absence of organic heart disease, the above findings suggest VT originating from the right ventricular outflow tract (RVOT).



References

  J Am Coll Cardiol 2011;57:2255-62




ECG 1. Non-sustained VT attacks in a patient with RVOT VT.

The above ECG has been donated by Dr. Peter Kukla.

Click here for a more detailed ECG




ECG 2. RVOT VT developed during exerxise.

The above ECG has been donated by Dr. Peter Kukla.

Click here for a more detailed ECG




ECG 3. Non-sustained VT attacks in a patient with RVOT VT.

The above ECG has been donated by Dr. Peter Kukla.

Click here for a more detailed ECG




Figure 1. Above is the Holter recording of a patient with RVOT VT.
VT attacks, frequent VPCs, ventricular couplet and triplets are seen.

The above Holter recording has been donated by Dr. Peter Kukla.

Click here for a more detailed ECG




ECG 4. The ECG above belongs to a 45 years-old woman with a normal ECHOcardiogram.
Nonsustained VT attacks are seen.

Comment by Dr. Fred Kusumoto:

The PVCs come from the RVOT. Beautiful example of AV dissociation.

Click here for a more detailed ECG