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

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 ...