There are P waves (+) with regular PP intervals and a rate of 85 beats/min. The P waves have a normal morphology; they are positive in leads I, II, aVF, and V4-V6. This is a stable normal sinus rhythm ...

Children with congenital complete atrioventricular block often require lifelong pacemaker therapy. Although such therapy restores a normal heart rate, it also results in dyssynchronous left ...

Polymorphic ventricular tachycardia is an abnormal heart rhythm where the bottom chambers of your heart beat too quickly. People with severe cases may experience sudden cardiac arrest. Conditions that ...

Medically reviewed by Rafle Fernandez, MD Key Takeaways Ventricular tachycardia is when the lower chamber of the heart beats ...