However, people will require regular monitoring and may have a higher risk of getting atrial fibrillation. For people with some congenital heart issues, the causes of heart block are present when ...

The QRS complex can be wide if aberrancy is present (ie, right or left bundle branch blocks). Causes of atrial tachycardia include chronic hypertension, congestive heart failure, valvular heart ...

The second, atrial flutter with varying AV block, is characterized by typical flutter waves with multiple different R-R intervals. Sophisticated analysis of this arrhythmia suggests multiple ...