Patients with a low Athens QRS score are highly likely to have coronary artery disease (CAD) even if they have a normal exercise stress test (EST), say researchers. Such patients "may warrant further ...

Among patients hospitalized with heart failure, having a longer than normal QRS duration (a measurement of the electrical conducting time of the heart on an electrocardiogram (ECG)] appears to predict ...

The rhythm is irregular, but the long intervals are the same (↔) and the short intervals (┌┐) are the same. One premature QRS complex (↑) is observed. Therefore, the rhythm is regularly irregular. The ...