Your heart has been doing its job faithfully for years, beating steadily in the background while you go about your daily life. Then suddenly, you become acutely aware of every beat as it seems to ...

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 ...

When you have atrial fibrillation, the two upper chambers of your heart (atria) don't beat in sync with the two lower chambers (ventricles). This makes your heart beat out of rhythm and sometimes very ...

Millions of people worldwide are living with undiagnosed heart rhythm disorders that can lead to stroke, heart failure or sudden cardiac death – often with little or no warning. During World Heart ...

In adults, a typical resting heart rate is 60 to 100 beats per minute, but structural or electrical disorders of the heart can cause it to rise or fall. Medications, a lack of sleep, and stress may ...

Supraventricular tachycardia (SVT) is a heart rhythm disorder that originates in the heart’s upper chambers, called the atria. The primary symptom of SVT is a rapid heartbeat. There are several types ...