A widened QRS duration occurs in the setting of a right ... which are discussed in detail inside their respective sections in ECG Reviews and Criteria.

Left ventricular hypertrophy can be diagnosed on ECG with good specificity ... the duration of the QRS complex may be widened. This is referred to as “LVH with QRS widening.” ...

These ECG voltage attenuations are of extracardiac mechanism, and impact the amplitude of QRS complexes, P-waves, and T-waves, occasionally resulting also in shortening of the QRS complex and QT ...

In the remaining studies, widened QRS complexes were most commonly attributed ... time from last drug exposure to first noted electrocardiogram abnormality or clinical evidence of suspected ...