Narrow QRS complexes occur regularly. This tracing suggests either atrial flutter or ventricular tachycardia. It is not atrial flutter, however. If it were, the QRS complexes occurring regularly would ...

Given today's short hospital stays after transcatheter aortic valve replacement (TAVR), there may be a role for selective long-term monitoring to flag delayed conduction abnormalities, studies showed.

Delayed cases of total atrioventricular block (AVB) or complete heart block can occur more than 2 days after TAVI, two new studies affirm, highlighting the utility of extended ECG monitoring after ...

The rhythm in Figure 1 has a subtle pattern—a narrow QRS complex with alternating short and long R-R intervals, resulting in paired QRS complexes. Careful observation of V1 in Figure 2 reveals tiny ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...