Page 15, Electrocardiography, Dr. D. Penney

Other ECG Abnormalities (continued...)

Intraventricular conduction defect: The SA nodal pacemaker is functioning, but the QRS complex is wide and bizarre (Figure 20). Again conduction is through either the right or left bundle branch, and from there through the tissue to the opposite ventricle. The T wave is inverted because repolarization is abnormal.

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