If the QRS complex is widened and downwardly deflected in lead V1, a left bundle branch block is present. If the QRS complex is widened and upwardly deflected in lead V1, a right bundle branch ...

LBBP is defined as capturing the left bundle branch (LBB) trunk or its fascicles, whereas capturing only the left septal ...

For example, the normal QRS complex in lead V1 does not contain ... A widened QRS duration occurs in the setting of a right bundle branch block, left bundle branch block, non-specific ...

Patients who received LBB pacing had greater improvements in QRS duration and left ventricular function and ... improvement than BiV pacing in heart failure patients with LBBB [left bundle branch ...

occasionally resulting also in shortening of the QRS complex and QT interval duration. PERED alleviation, in response to therapy of CHF, reverses all above alterations. These fresh diagnostic ...