Looking closely at the last part of the QRS complex in leads V1 and V2 ... reentrant circuit will be created. See the ECG strip below which shows a PVC initiating AVNRT: ...

There are only a few sinus rhythm QRS complexes available to examine on this ECG. Using lead V1 an incomplete right bundle branch block is seen. A prolonged QT interval is present that extends all ...

The following is a summary of “Predicting factors for unresolved premature ventricular complexes in healthy children,” ...