What Cause Sinus Tachycardia?

People develop sinus tachycardia when the sinus node in the heart sends electrical impulses more quickly than normal. It can occur as a result of a particular trigger, such as exercise, caffeine, or stress.

Why does sinus tachycardia occur?

Sinus tachycardia is when your body sends out electrical signals to make your heart beat faster. Hard exercise, anxiety, certain drugs, or a fever can spark it. When it happens for no clear reason, it's called inappropriate sinus tachycardia (IST). Your heart rate might shoot up with just a little movement or stress.

Is having sinus tachycardia bad?

In some situations, sinus tachycardia is completely normal. For example, sinus tachycardia is expected during strenuous exercise or after being startled. Other things that can cause sinus tachycardia include: anxiety or emotional distress.