As the 12 leads of the same tracing show above, there is a typical rsR' pattern in V1, which is diagnostic of RBBB. In leads I and aVL of this tracing, the wide QRS complexes are made of a broad S ...

Wide QRS regular tachycardia is present in Figure 1. No definite P waves are identifiable. There is one PVC in the lower tracing. During the compensatory pause, there is definitely a P wave (↓ on ...

INJURY to the invisible subendocardial conduction system during surgical closure of congenital defects in the ventricular septum is an uncommon but extremely grave complication. 1,2 Impalement of ...

The interventricular septum separates the heart’s two ventricles and plays a vital role in maintaining correct bloodflow. Sometimes a defect can occur or be present from birth. This can increase the ...