There are only a few sinus rhythm QRS complexes available to examine on this ECG. Using lead V1 an incomplete right bundle branch block is seen. A prolonged QT interval is present that extends all the ...

At times it is difficult to distinguish atrial fibrillation from atrial flutter on the ECG. This example shows coarse "fibrillatory waves" in the setting of atrial fibrillation. This are of varying ...

An electrocardiogram (ECG) is the most common test to diagnose arrhythmia, and recording one as early as possible after heart palpitations can be helpful. Blood tests, stress tests, and chest x-rays ...

Arrhythmias are irregularities in the heart’s rhythm, such as beating too fast, too slow, or erratically. While some are harmless, others can lead to organ damage or be life threatening. Various ...