Remember that T wave inversions and ST segment depression are normal in leads V1 to V3 in the presence of a right bundle branch block ... tachycardia. The Brugada Criteria can be helpful in ...

If the QRS complex is widened and downwardly deflected in lead V1, a left bundle branch block is present ... cause a wide complex QRS complex. The Brugada Criteria for diagnosing ventricular ...

Her initial ECG met the criteria of type 1 Brugada syndrome and her follow-up ECG ... and pseudo-right bundle branch block pattern, which are typical features of type 1 Brugada pattern.